Peptide Vendors: Testing, COAs, Prices and Who Runs Each Store

14,541 prices tracked across 208 vendors

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208 of 208 stores

99 Purity Peptides
99puritypeptides.com ↗
Partner
Not enough comparable listings
vs median
11
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Optiq Health Labs
where this comes from
Named on the certificates; the library page names no lab.
LOT MATCH
Yes: 32 certificate PDFs with batch number and analysis date listed.
where this comes from
One batch code, KIZN072426, covers 17 different products. The certificate read is issued to Wholesale Peptide Supply rather than to this store.
TESTED FOR
Identity by LC-MS, potency by HPLC, purity by RP-HPLC, plus endotoxin, sterility, solvents and metals.
where this comes from
No m/z or retention values are printed on the certificate read.
PayPal, Zelle, Visa, Amex, Mastercard (checkout badges)
CouponPEPTIDEDECODING saves 10% on single products (kits and bundles excluded)
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name or address published.
more about this seller
Phone +1 (843) 330-7365.
See its prices →Visit site ↗
Checked Oct 24, 2026
Aavant Research
aavantpeptides.com ↗
Not enough comparable listings
vs median
58
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik Analytical
LOT MATCH
COAs by test date with tested amount and HPLC purity, each verifiable on the lab site.
where this comes from
In-house HPLC on every batch (stated)
TESTED FOR
HPLC purity and content.
where this comes from
Mass spectrometry on third-party reports (stated)
Crypto only (BTC, ETH, USDT, USDC, LTC, XMR, SOL, DOGE and more)
No coupon
No warning letter, no copied name
21 outside tests on Finnrick ↗
WHO RUNS IT
Aavant Peptides (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 21, 2026
Alpha Peptides
alpha-peptides.com ↗
Partner
45% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
50% below market on Aug 26, 2026, 45% below on Oct 24, 2026.
56
compounds
41%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Analytical Formulations, Inc.
where this comes from
Named on the certificate itself; the store's page does not name it.
LOT MATCH
Yes, public COA page, one per lot.
TESTED FOR
Identity by UV absorbance, purity and content by UV/Vis spectrophotometry, heavy metals.
where this comes from
Its page says HPLC purity and mass spectrometry identity. The certificate names a UV/Vis spectrophotometer and no HPLC or mass spectrometry.
Visa/Mastercard option plus other methods shown at checkout (not listed); an account is required to shop. Card charges bill as DEALS4WHEELS SN PEDRO GARZ MEXICO (a foreign processor; the store warns of a small foreign-transaction fee)
CouponPEPTIDEDECODING saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
ALPHAPEP LLC
more about this seller
221 Main St, Ste N, Nashua, NH 03060. Phone +1 (978) 219-0404 (text only).
See its prices →Visit site ↗
Checked Oct 24, 2026
American Peptides
americanpeptides.us ↗
Partner
29% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
16% above market on Aug 26, 2026, 29% above on Oct 24, 2026.
50
compounds
92%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioviridian
where this comes from
Named on the home page: HPLC-MS purity, MALDI identity, endotoxin
LOT MATCH
Yes, lot-matched COAs published, plus a verify-by-lot page.
TESTED FOR
Purity, identity, endotoxin, sterility, heavy metals, fill amount.
Not listed on the site; the refund policy's chargeback section refers to bank disputes, which implies card payment, but no method list was found
CouponPEPTIDEDECODING saves 15%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
American Peptides LLC
more about this seller
9742 St. Vincent Ave, Shreveport, LA 71106. Phone +1 (318) 347-5336.
See its prices →Visit site ↗
Checked Oct 24, 2026
Amino Club
aminoclub.com ↗
Partner
49% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
51% below market on Sep 28, 2026, 49% below on Oct 24, 2026.
39
compounds
90%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories, San Diego
where this comes from
Certificates carry an access code for verifying them at the laboratory
LOT MATCH
Issued per lot with a certificate number, an accession number and a lot number.
where this comes from
The store's own certificate page lists none, so a reader has to go through the qualification gate to reach one
TESTED FOR
Purity by HPLC at 99.88% against a 95% specification, identity by HPLC retention-time matching, a fentanyl screen, heavy metals by ICP-MS, sterility by PCR, and conformity testing across two samples.
Visa, American Express, Apple Pay, Google Pay
CouponPEPTIDEDECODING
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
Five other sites use this name
The real store is aminoclub.com. One buyer paid an impostor site that then demanded another $200. The store says it never asks for extra fees after purchase.
See its prices →Visit site ↗
Checked Sep 28, 2026
Amino USA
aminousa.com ↗
4% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
3% below market on Aug 26, 2026, 4% below on Oct 24, 2026.
71
compounds
96%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioregen and Freedom Diagnostics
where this comes from
Bioregen certificates carry a security key for verification
LOT MATCH
Issued per batch, for example batches 26GTB47-0002, 26GTB-0004 and 26GTB-0003.
TESTED FOR
Purity between 99.16% and 99.47%, identity and quantity against the label, by ultra high performance liquid chromatography with mass spectrometry, with full scan mass spectrometry and retention time analysis shown.
card, crypto, e-check
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
5900 Balcones Drive, Suite 100, Austin, TX 78731
more about this seller
Phone (936) 931 8152.
See its prices →Visit site ↗
Checked Oct 24, 2026
Apex Peptide Supply
apexpeptidesupply.com ↗
13% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
2% above market on Aug 26, 2026, 13% above on Oct 24, 2026.
21
compounds
97%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioviridian and Janoshik Analytical
where this comes from
Named on its COA page for cross-check certificates; the issuer of its primary certificates is not named on the page.
LOT MATCH
Yes: 66 certificate PDFs across 20 products, labeled by batch number, plus 19 cross-checks.
where this comes from
No certificate dates are shown on the page.
TESTED FOR
Purity by HPLC and identity by mass spectrometry on its Bioviridian cross-checks.
where this comes from
The primary certificates are images; the only text they carry is ion notation.
Not stated before checkout
No coupon
No Finnrick test results
WHO RUNS IT
No company name or address published.
more about this seller
Phone (505) 370-2370 (call or text; New Mexico area code).
Five other Apex-named sites exist
The real store is apexpeptidesupply.com. One of the copies runs on unfinished template text. The store has answered complaints that do not match its records.
See its prices →Visit site ↗
Checked Oct 24, 2026
Arcane Peptides
arcanepeptides.com ↗
At the median
vs median
Price position
Oct 20, 2026Oct 24, 2026
At the market median on Oct 20, 2026, at the market median on Oct 24, 2026.
29
compounds
97%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory and Freedom Diagnostics
where this comes from
Named on the certificates; the library page names neither.
LOT MATCH
Yes: 39 lot entries across 30 products, current and previous lots, as PDFs and images.
TESTED FOR
Purity by HPLC-UV/VIS on its Vanguard lots; identity by LC-MS and purity by HPLC-UV on its Freedom lots.
where this comes from
Certificate dates are not shown on the library page; they are on the documents.
Visa, Mastercard, American Express, Discover, ACH or wire, and crypto (BTC, ETH, USDT) (terms of service)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Arctic Lab Supply
arcticlabsupply.com ↗
9% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
6% below market on Oct 20, 2026, 9% below on Oct 24, 2026.
17
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories, Freedom Diagnostics and Janoshik Analytical
where this comes from
Each named per entry on its COA page: ILS on 7 current lots, Freedom on 5, Janoshik on 4 earlier.
LOT MATCH
Yes: reports per product, strength and lot, each with lot number, test date, certificate number, PDF and a lab verification link; 7 current lots have reports.
TESTED FOR
Purity by HPLC; identity by LC-MS on its Freedom Diagnostics lots, retention time on its ILS lots.
where this comes from
Its COA page states the identity method for each laboratory in text.
Card or bank payment by secure invoice (Apple Pay and Google Pay at the card step) or Zelle (5% off)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Arctic Lab Supply LLC (Alaska business entity #10337341)
more about this seller
Anchorage, AK 99515 (no street address); support@arcticlabsupply.com.
See its prices →Visit site ↗
Checked Oct 24, 2026
Ascend Science
ascend.science ↗
Partner
21% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
34% below market on Aug 26, 2026, 21% below on Oct 24, 2026.
44
compounds
93%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
LOT MATCH
Yes, the lot number on the vial matches the COA.
TESTED FOR
Purity, net content, identity, heavy metals, sterility, endotoxin, fentanyl screen.
All major credit cards (Visa, Mastercard, American Express, Discover)
CouponPEPTIDEDECODING saves 15%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
134 Land Grant St 2, St. Augustine, FL 32092
more about this seller
Phone 904-907-4610.
See its prices →Visit site ↗
Checked Oct 10, 2026
BioInfinity Lab
bioinfinity.co ↗
Partner
56% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
18% above market on Aug 26, 2026, 56% above on Oct 24, 2026.
24
compounds
83%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Verum Analytics
where this comes from
Basel, Switzerland; named on every row of its library, each row linking to the laboratory's own certificate page.
LOT MATCH
Yes: 46 entries with batch number, test date and purity, each linking to the laboratory's certificate page.
where this comes from
One batch code, BIL-BATCH-01-2602, appears on 15 entries across unrelated products. Three entries report purity below the page's 99% guarantee.
TESTED FOR
Purity by HPLC-UV, identity by electrospray mass spectrometry against a reference, quantity and endotoxin.
where this comes from
Read from the laboratory's certificate page for lot BIL-DSIP-01-2606.
Not stated before checkout
CouponPeptideDecoding saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
BioInfinity LLC, 1460 Broadway, Manhattan, NY 10036
more about this seller
Phone Listed as temporarily unavailable.
See its prices →Visit site ↗
Checked Oct 24, 2026
Biolinx Labs
biolinxlabs.com ↗
Partner
28% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
24% above market on Sep 28, 2026, 28% above on Oct 24, 2026.
25
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Accumark Labs
where this comes from
Named on its home page: purity by HPLC and identity by mass spec for the batch you receive
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Visa and Discover (checkout badges)
CouponALYSSA10 saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
PEP Research (named in its research-use acknowledgment)
See its prices →Visit site ↗
Checked Oct 24, 2026
Biologix Labs
biologixlabsresearch.com ↗
Partner
Not enough comparable listings
vs median
17
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik, Precision Diagnostics and ILS Labs
where this comes from
Shown beneath the sample certificate on its home page, which does not say which one ran the lot
LOT MATCH
Says every batch has a COA with HPLC and mass spectrometry data (COA library on the shop).
where this comes from
Its sample COA shows a lot number
TESTED FOR
Purity, content and endotoxin (stated).
Visa, Mastercard, American Express, Apple Pay and Google Pay (card statements may show the processor's name)
CouponPEPTIDEDECODING
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Biologix Labs Research
See its prices →Visit site ↗
Checked Oct 10, 2026
Cosmic Peptides
cosmicpeptides.com ↗
19% under
vs median
Price position
Oct 11, 2026Oct 24, 2026
28% below market on Oct 11, 2026, 19% below on Oct 24, 2026.
24
compounds
54%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Clark-Turner Scientific
where this comes from
Named on the certificates; the library page names no lab.
LOT MATCH
Yes: a lot table with purity and quantity per lot and a certificate file per row.
where this comes from
The table loads by script; it does not appear to readers with scripts off.
TESTED FOR
Purity by reversed-phase HPLC, identity by electrospray mass spectrometry with m/z printed.
where this comes from
Web checkout is disabled on the store.
None: web checkout is disabled, so nothing can be bought online at present
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
Online checkout is disabled
See its prices →Visit site ↗
Checked Oct 17, 2026
Direct Peptides
directpeptides.com ↗
34% over
vs median
Price position
Oct 5, 2026Oct 24, 2026
13% above market on Oct 5, 2026, 34% above on Oct 24, 2026.
36
compounds
95%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Horizon Analytical
where this comes from
Named on the certificates.
LOT MATCH
Yes: a purity certificate and an endotoxin certificate per lot, searchable by product or lot number.
TESTED FOR
Identification, quantitation and purity by UPLC with mass spectrometry; endotoxin separately.
where this comes from
Its COA page says each lot is tested by UPLC/MS; the certificates say the same.
Visa, Mastercard, American Express, Discover
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
700 Smith St #61070, Houston, TX 77002 (a numbered mailbox in a downtown office tower)
more about this seller
Phone +1 (972) 919-0219 (text support). Not the same business as Direct-Peptides (direct-peptides.com and america.direct-peptides.com, a UK-based international seller taking Zelle) or directpeptides.store.
See its prices →Visit site ↗
Checked Oct 24, 2026
Disguised Alpha
disguisedalpha.com ↗
Partner
At the median
vs median
Price position
Oct 18, 2026Oct 24, 2026
5% below market on Oct 18, 2026, at the market median on Oct 24, 2026.
92
compounds
86%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories, Chromate and Freedom Diagnostics
where this comes from
The three its certificate portal counts. ILS reports carry ISO/IEC 17025 accreditation marks.
LOT MATCH
Yes: a certificate per batch, searchable by batch number in its COA Portal.
where this comes from
407 reports across 180 products on 22 October 2026, each with an access code and a laboratory verify link. The portal states that a report number is not always a production batch number.
TESTED FOR
Identity, HPLC purity, measured content, sterility, endotoxin and heavy metals, plus a fentanyl screen.
where this comes from
Mass spectrometry (LC-MS) is the stated identity method on its Freedom Diagnostics certificates. Its ILS Laboratories and Chromate certificates, which cover the main injectable peptides, confirm identity by HPLC without mass spectrometry.
Visa, American Express, Zelle, instant bank payment, Chime and crypto (BTC, ETH); Zelle and crypto discounts at checkout
CouponPEPTIDEDECODING saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Disguised Alpha (its COAs are issued to "Disguised Research"; footer: "Powered by Sterling Path LLC")
more about this seller
Irvine, CA (no street address); support@disguisedalpha.com.
See its prices →Visit site ↗
Checked Oct 24, 2026
Elite Miami Peptides
elitemiamipeptides.com ↗
2% over
vs median
Price position
Sep 5, 2026Oct 24, 2026
4% above market on Sep 5, 2026, 2% above on Oct 24, 2026.
44
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MZ Biolabs
where this comes from
Named on the certificate images; the store's pages name no lab.
LOT MATCH
Yes: one certificate image per product on its COA page, each carrying a lot number.
where this comes from
The certificate read is dated August 2025.
TESTED FOR
Purity by HPLC-UV and identity by mass spectrometry with measured mass.
where this comes from
Method printed on the certificate as HPLC-UV-MS.
ACH/e-check at checkout (terms); a separate 'Make a Payment' page exists. Card not confirmed
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Elite Miami Peptides LLC (Florida, filed May 6, 2024; active)
more about this seller
150 SE 2nd Ave, 3rd Floor, Miami, FL 33131 (state filing, changed April 2026); the 2025 contact page gave 7973 NW 18th Ct, Miami, FL 33147. Phone (877) 736-7642.
See its prices →Visit site ↗
Checked Oct 24, 2026
Endura Peptides
endurapeptides.com ↗
18% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
17% below market on Oct 20, 2026, 18% below on Oct 24, 2026.
10
compounds
93%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named on the certificates and in the page description.
LOT MATCH
Yes: 15 certificate PDFs, one per product and strength, each carrying its lot number.
TESTED FOR
Identity by LC-MS, purity by HPLC-UV, net content and endotoxin.
where this comes from
Lot numbers and dates appear on the documents, not on the listing page.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Endura Research LLC, doing business as Endura Peptides (its FAQ says Endura LLC)
more about this seller
Phone 301-241-7211.
See its prices →Visit site ↗
Checked Oct 20, 2026
Eon Peptides
eonpeptides.com ↗
9% under
vs median
Price position
Oct 19, 2026Oct 24, 2026
15% below market on Oct 19, 2026, 9% below on Oct 24, 2026.
39
compounds
93%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics, Accurate Test Labs and pH Solutions
where this comes from
Named under a Tested at heading in its certificate library
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Visa, Amex, Apple Pay, Google Pay (named on its store-credit page)
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
Its review numbers do not check out
The store claims more than 100,000 active researchers and 2,400 reviews, but its featured reviews carry placeholder IDs such as PI-MOLBIO-01. Treat both figures as unverified.
See its prices →Visit site ↗
Checked Oct 24, 2026
Evolve BioPep
evolvebiopep.com ↗
44% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
42% below market on Aug 26, 2026, 44% below on Oct 24, 2026.
55
compounds
98%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says HPLC, GC-MS and LC-MS testing
LOT MATCH
Verified COAs (stated).
TESTED FOR
Purity, consistency, structure, contaminants (stated).
Credit and debit cards and crypto; Affirm usable through Apple Pay or Google Pay; processing fees may be added. Since Stripe closed its account in July 2025, cards go through StratosPay, a crypto-backed merchant of record that opens in a new tab, may bill as an international transaction and does not support refunds
No coupon
No warning letter, no copied name
11 outside tests on Finnrick ↗
WHO RUNS IT
1621 Central Ave, Cheyenne, WY 82001 (a widely used registered-agent address)
See its prices →Visit site ↗
Checked Oct 24, 2026
Evolve Peptides
evolvepeptides.com ↗
34% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
27% above market on Sep 28, 2026, 34% above on Oct 24, 2026.
47
compounds
87%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Chromate, Janoshik and MZ Biolabs (named on its home page)
where this comes from
Lot-matched COA lookup by batch number
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC, as the store describes it.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
5830 E 2nd St, Casper, WY 82609 (a widely used registered-agent address)
more about this seller
site since July 2024.
See its prices →Visit site ↗
Checked Oct 24, 2026
Felix Chemical Supply
felixchem.is ↗
20% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
20% above market on Oct 19, 2026, 20% above on Oct 24, 2026.
30
compounds
77%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Certificates sit behind the store's sign-in
LOT MATCH
Certificates are issued per lot and carry a lot number, an accession number and a search code for looking that lot up.
TESTED FOR
Purity by HPLC with UV detection, identity by LC-MS, net content, and endotoxin by the Limulus Amebocyte Lysate assay under USP 85 with two replicates.
Credit card, e-check, Cash App (per an outside directory); wire transfer for wholesale orders of 20+ vials
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Chem-LLC (trading as Felix Chemical Supply)
more about this seller
Phone (307) 218-5900 (a Wyoming area code). Around since 2022 (per outside reviews).
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Glacier Aminos
glacieraminos.shop ↗
36% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
18% below market on Oct 20, 2026, 36% below on Oct 24, 2026.
60
compounds
97%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Kovera Labs, Freedom Diagnostics, Ethos Analytics and ILS Laboratories
LOT MATCH
Yes: COA library with every lot ("112 products, 309 batches"), each with the full COA and a Verify link to the lab's own lookup, searchable by the lot number on the vial; some older lots show no lab or date.
TESTED FOR
Identity by LC-MS on its Freedom Diagnostics lots; purity by HPLC across its ILS, Ethos and Freedom lots.
where this comes from
Each lot in its library names its laboratory and links to that laboratory's own lookup.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Glacier Aminos LLC (named in its terms)
more about this seller
2580 East Harmony Rd., Suite 301-58, Fort Collins, CO 80528.
See its prices →Visit site ↗
Checked Oct 24, 2026
HLX Labs
hlxlabs.shop ↗
Partner
27% under
vs median
Price position
Oct 10, 2026Oct 24, 2026
32% below market on Oct 10, 2026, 27% below on Oct 24, 2026.
33
compounds
86%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named on the certificates opened from its library; the library page names no lab.
LOT MATCH
Yes: 34 entries, 16 with a lot number, each opening a certificate in a viewer.
where this comes from
Its BPC-157 certificate shows the lot as a cap color and prints #REF! in the net content field.
TESTED FOR
Identity by LC-MS, purity by HPLC-UV and net content.
where this comes from
Each library entry states Purity (HPLC) and Identity (LC-MS) in text, and the certificates show the same.
Visa, Mastercard, American Express, Discover, Apple Pay, Venmo, Cash App and Zelle
Couponpeptidedecoding saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
HLX Labs
more about this seller
Nashville, TN (no street address); info@hlxlabs.shop.
See its prices →Visit site ↗
Checked Oct 24, 2026
Ion Peptide
ionpeptide.com ↗
20% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
31% below market on Sep 28, 2026, 20% below on Oct 24, 2026.
66
compounds
85%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories and Kovera Labs
where this comes from
Certificates carry QR and access codes for verifying them at the laboratory
LOT MATCH
Issued per lot with a certificate number, an accession number and a lot number, for example lot CD5-05042026.
TESTED FOR
Purity by HPLC at 99.42% against a 95% specification, identity by LC-MS, net peptide content, conformity across two samples, heavy metals by ICP-MS, sterility by PCR, and endotoxin under USP 85 at 0.061 EU/mL.
ACH (5% off at checkout); other methods not listed
No coupon
No warning letter, no copied name
4 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Iron Peptides
buyironpeptides.com ↗
Not enough comparable listings
vs median
1
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Certificates sit behind an age agreement any visitor can accept, not a registration
LOT MATCH
Published per lot, each with a lot number, an accession number and a search code for looking that lot up.
TESTED FOR
Purity and identity by HPLC with UV detection coupled with mass spectrometry, stated on the certificate itself, with net content broken out by component on blends.
Not named; checkout mentions Touch ID / Face ID wallet payment
No coupon
No Finnrick test results
WHO RUNS IT
550 Congressional Blvd, Carmel, IN 46032 (per its Trustpilot profile; the store says it manufactures in an FDA-registered facility in Carmel, Indiana)
more about this seller
Phone +1 619-853-3399 (a San Diego area code). Around since 2024 (per the store banner).
Another site uses this name
The real store is ironpeptides.com. ironpeptidesstore.com is separate.
See its prices →Visit site ↗
Checked Sep 22, 2026
Kylo Peptides
kylopeptides.com ↗
29% over
vs median
Price position
Oct 21, 2026Oct 24, 2026
29% above market on Oct 21, 2026, 29% above on Oct 24, 2026.
23
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik Analytical, Freedom Diagnostics, Vanguard Laboratory and Optiq Health Labs
LOT MATCH
Yes: public COA library searchable by lot number (30 entries, Aug 2026), matched to the lot on the vial (stated).
TESTED FOR
Identity by LC-MS on its Freedom Diagnostics entries; purity by HPLC on its Freedom and Vanguard entries.
where this comes from
Each entry in its COA library names its laboratory.
Visa, Mastercard, American Express, Discover and Apple Pay
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Kylo Labs LLC (brand Kylo Peptides)
more about this seller
30 N Gould St, Suite R, Sheridan, WY 82801. Phone +1 350 252 3314. Around since 2021.
See its prices →Visit site ↗
Checked Oct 21, 2026
Licensed Peptides
licensedpeptides.com ↗
Partner
43% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
31% above market on Aug 26, 2026, 43% above on Oct 24, 2026.
47
compounds
87%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory
where this comes from
ISO/IEC 17025
LOT MATCH
Yes, batch-specific COA.
TESTED FOR
Purity, identity, endotoxin, sterility, quantity.
where this comes from
Vanguard Laboratory certificates confirm identity and purity by HPLC-UV/VIS and name no mass spectrometry.
Visa, Mastercard, American Express (US-issued), Apple Pay, US bank e-check/ACH (Link), Zelle
No coupon
No warning letter, no copied name
4 outside tests on Finnrick ↗
WHO RUNS IT
Licensed Peptides, Inc.
more about this seller
1489 W Palmetto Park Rd, Boca Raton, FL 33486. Phone +1 (855) 322-2214.
See its prices →Visit site ↗
Checked Oct 24, 2026
Loti Labs
lotilabs.com ↗
19% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
14% above market on Sep 28, 2026, 19% above on Oct 24, 2026.
53
compounds
97%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioviridian
where this comes from
Certificates carry a web verification code checkable at the laboratory
LOT MATCH
Issued per lot, for example lot LL-CIB-0526, though one of the two certificates seen prints NA in its lot field.
TESTED FOR
Identity by MALDI-MS, purity by RP-HPLC at 214 nanometres, content by HPLC quantitation, and endotoxin under USP 85 below 0.05 EU/mL.
Credit/debit card, Apple Pay, Google Pay, Zelle, same-day US bank payment via Plaid (orders of $300+ wait 3-4 business days to settle), crypto; no PayPal, Cash App or Venmo
No coupon
No warning letter, no copied name
32 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Lumera Labs
mylumeralabs.com ↗
2% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
1% below market on Oct 20, 2026, 2% below on Oct 24, 2026.
22
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named on the certificate images; the page says only independent labs.
LOT MATCH
Yes: 10 certificate images, one per product, each carrying its lot number.
TESTED FOR
Identity by LC-MS, purity by HPLC-UV and net content.
where this comes from
Its page says purity above 99%; its BPC-157 certificate reports 96.79%.
PayPal, Visa, Mastercard and Bitcoin (footer icons)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Lumera Labs Research LLC (named in its terms)
more about this seller
5900 Balcones Dr, Ste 100, Austin, TX 78731; contact@mylumeralabs.com. Phone 210-417-9638.
See its prices →Visit site ↗
Checked Oct 24, 2026
Luvaminos
luvaminos.com ↗
Partner
33% under
vs median
18
compounds
72%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Freedom Diagnostics Testing, PLLC of Franklin, Tennessee, named on each certificate page.
LOT MATCH
Yes, the lot code on the vial matches the certificate.
where this comes from
21 certificates across 19 products, each with a lot code, test date, accession number, purity and measured net content. Each is also published on the laboratory's own domain.
TESTED FOR
Purity, identity and net content by HPLC with UV detection coupled with mass spectrometry.
where this comes from
The method is given on each certificate page. Measured content is published against the label: one lot read 11.42 mg against a 10 mg label, another 4.95 mg against 5 mg.
Visa, Mastercard, American Express, Discover, Apple Pay and Google Pay; Zelle when checkout offers it
CouponPEPTIDEDECODING saves 5%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Luvaminos LLC (New Mexico)
more about this seller
1209 Mountain Road PL NE STE R, Albuquerque, NM 87110; support@luvaminos.com.
See its prices →Visit site ↗
Checked Oct 22, 2026
Modern Aminos
modernaminos.com ↗
5% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
10% below market on Aug 26, 2026, 5% below on Oct 24, 2026.
81
compounds
95%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Kovera Labs, Vanguard Laboratory, Chromate, TrustPointe Analytics and Freedom Diagnostics
where this comes from
Named on the store's own pages
LOT MATCH
Reviewers say COAs match the batch shipped.
TESTED FOR
Purity by HPLC, as the store describes it.
US credit cards (Visa, Mastercard, AMEX), same-day bank payment, bitcoin via BTCPay (terms, Nov 2025). An older aggregator summary said cards were taken 'via digital gift certificate', plus Zelle and CashApp; its FAQ addresses why payment methods change
No coupon
No warning letter, no copied name
6 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Modified Aminos
modifiedaminos.shop ↗
19% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
20% below market on Oct 20, 2026, 19% below on Oct 24, 2026.
63
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Ethos Analytics
where this comes from
Named on product pages and certificates; a Vanguard Laboratory certificate is shown as its sample.
LOT MATCH
Yes: about 180 lot rows with test dates in its library, and a lab PDF per lot on product pages.
TESTED FOR
Assay and purity by HPLC, identity by retention time; fentanyl, heavy metals and microbiology.
where this comes from
Its certificates confirm identity by retention time against a reference standard and name no mass spectrometry.
Visa, American Express, Discover, bank payment (10% off) and crypto (footer)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Wyoming LLC (its contact page gives the name as modifiedaminos.shop)
more about this seller
1309 Coffeen Ave, Sheridan, WY 82801 (legal and mailing address); also lists 2700 Post Oak Blvd, 21st Floor, Houston, TX 77056; cs@modifiedaminos.shop. Phone +1 (805) 804-3534.
See its prices →Visit site ↗
Checked Oct 24, 2026
Moglabs
moglabs.bio ↗
20% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
19% below market on Oct 20, 2026, 20% below on Oct 24, 2026.
50
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory and Freedom Diagnostics
where this comes from
Named on the certificates; the library page labels one lot Vanguard and names no other lab.
LOT MATCH
Yes: 44 products with current lots and 15 with previous lots, as PDFs and images.
TESTED FOR
Purity by HPLC-UV/VIS on its Vanguard lots; identity by LC-MS and purity by HPLC-UV on its Freedom lots.
where this comes from
Certificate dates are not shown on the library page; they are on the documents.
Visa, Mastercard, American Express, Discover, Zelle, same-day bank payment, ACH or wire, and crypto (BTC, ETH, USDT); the FAQ says cards are not always accepted
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Moglabs (legal entity not stated; its policy text uses the name RUO.Bio)
more about this seller
Phone +1 971 365 5492.
See its prices →Visit site ↗
Checked Oct 24, 2026
Nation Peptides
nationpeptides.com ↗
18% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
16% below market on Oct 20, 2026, 18% below on Oct 24, 2026.
19
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named with a batch number and test date on product pages; the library page names no lab.
LOT MATCH
Yes on product pages: a certificate image with batch number and test date for the lot shipping.
where this comes from
Its library lists 19 purity values with no lot numbers, dates or documents; its flagship GLP-3 page shows no certificate.
TESTED FOR
Purity by HPLC; identity by LC-MS at its laboratory.
where this comes from
The certificate images are tied to batches on product pages; the library page shows numbers only.
Visa, Mastercard, American Express, Apple Pay, Zelle, bank transfer and Bitcoin; card statements do not show the store name
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Nation Labs Inc. (its terms call Nation Peptides a trade name of Nation Labs Inc.)
See its prices →Visit site ↗
Checked Oct 24, 2026
Nationwide Peptides
nationwidepeptides.com ↗
Partner
7% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
4% below market on Aug 26, 2026, 7% above on Oct 24, 2026.
65
compounds
84%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
LOT MATCH
Yes, verify by accession number or search code on the lab site.
TESTED FOR
Purity, identity.
Major credit cards (store Shipping and Payments page); the footer image is labeled 'payment_cards_check', so cards plus check/e-check; an outside review lists PayPal, Visa and Mastercard
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
National Science Labs, LLC (nationalsciencelabs.co)
more about this seller
236 E. Main St, Ste 47, Sevierville, TN 37862. Phone (844) 480-0111. Around since late 2025.
See its prices →Visit site ↗
Checked Oct 24, 2026
Nexaph
nexaph.com ↗
Not enough comparable listings
vs median
42
compounds
98%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik
where this comes from
Named on its home page
LOT MATCH
A certificate site of its own at coa.nexaph.com lists 45 products with current and historical certificates.
where this comes from
The reports are Janoshik test reports carrying a batch identifier, a task number and a key for verifying them at the laboratory
TESTED FOR
Purity and compound content reported per batch, for example 99.186% purity and 83.982% AHK-Cu content by mass on one ampule.
where this comes from
The report names no analytical method
Not stated before checkout
No coupon
275 outside tests on Finnrick ↗
WHO RUNS IT
Shanghai Nexa Pharma Co (named on its own 'Our Company' page)
more about this seller
China (Shanghai); no street address. Chinese manufacturer selling mainly 10-vial kits direct to US buyers.
Three other sites use this name
The real store is nexaph.com. nexaphpeptides.com, nexaphpeptide.com and nexaph-peptide.com are separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
Nextgen Peptides
ngpeptide.com ↗
48% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
50% below market on Sep 28, 2026, 48% below on Oct 24, 2026.
18
compounds
90%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Labs (named on its COA panel: HPLC purity, identity, fentanyl screen, ICP-MS heavy metals, sterility, endotoxin)
where this comes from
COA library by lot
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC, as the store describes it.
Visa, Amex, Discover, Apple Pay (checkout badges)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Carlsbad, CA (ships from Carlsbad; no street address)
more about this seller
Phone +1 (424) 666-5926 (SMS only). Around since catalog uploads from June 2026.
See its prices →Visit site ↗
Checked Oct 24, 2026
Northline Labs
northlinelabs.org ↗
22% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
20% above market on Aug 26, 2026, 22% above on Oct 24, 2026.
47
compounds
99%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories
where this comes from
Named on the certificates opened from its library.
LOT MATCH
Yes: a certificate per lot in its library with lot number and purity, opening in a viewer.
TESTED FOR
Purity by HPLC, identity by retention time; fentanyl and endotoxin.
where this comes from
Its homepage says HPLC and mass spec; its certificates show retention-time identity and no mass spectrometry.
Not stated before checkout
No coupon
No Finnrick test results
WHO RUNS IT
Northline Research (trading as Northline Labs / North Line Labs)
more about this seller
3501 NE Marshall St, Minneapolis, MN 55418 (per an outside review; the store says it operates from Minneapolis).
Another site uses this name
The real store is northlinelabs.com. northlinelabs.us is separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
Nura Peptide
nurapeptides.com ↗
Partner
Not enough comparable listings
vs median
9
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
An outside review found a public Freedom Diagnostics report for a PT-141 lot; the store's own pages say third-party tested per batch without naming the lab
LOT MATCH
Store says every batch is tested.
where this comes from
No COA library found on the site
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Card (the shipping policy has a chargeback section and refunds go to the original payment method; an outside review's checkout records list credit card). No method list published
CouponPEPTIDEDECODING15 saves 15%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name or address published.
more about this seller
Phone 561-223-9456 (Palm Beach County, FL area code). Moved from nurapeptide.com to nurapeptides.com in October 2026.
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 4, 2026
Oasis Labs
myoasislabs.com ↗
5% over
vs median
Price position
Oct 20, 2026Oct 24, 2026
5% above market on Oct 20, 2026, 5% above on Oct 24, 2026.
46
compounds
98%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
BioChex
where this comes from
Named on the certificates that open without an account; the library page names no lab.
LOT MATCH
Yes: 116 entries with lot number, purity, net content and test date.
where this comes from
Most certificate files open to account holders only; the BioChex capsule certificates open freely.
TESTED FOR
Identity by LC-MS, purity by RP-HPLC, net quantity by HPLC-UV.
where this comes from
Read from a BioChex certificate; the laboratory's own site describes HPLC services only.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Oasis Labs (legal entity not stated)
more about this seller
Las Vegas, NV (no street address); support@myoasislabs.com. Around since 2023.
See its prices →Visit site ↗
Checked Oct 24, 2026
Oath Research
oathresearch.com ↗
44% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
29% above market on Aug 26, 2026, 44% above on Oct 24, 2026.
56
compounds
75%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
LOT MATCH
Published per batch.
where this comes from
Outside review says each vial has a QR code to its COA
TESTED FOR
Purity and identity (stated).
Card through a PCI-compliant gateway on its own checkout (not named); a reviewer notes payment is taken on the store's site rather than a third-party page
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
51 West Vaughn Avenue, Suite 205, Gilbert, AZ 85233
more about this seller
Phone +1 480-999-1097. Rebranded from Oath Peptides (oathpeptides.com) to Oath Research in 2026.
See its prices →Visit site ↗
Checked Oct 24, 2026
Orbitrex Peptides
orbitrexpeptide.is ↗
4% under
vs median
Price position
Sep 18, 2026Oct 24, 2026
17% below market on Sep 18, 2026, 4% below on Oct 24, 2026.
47
compounds
98%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Trustpointe Analytics
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
The store does not say.
Outside reviews document card, ACH and crypto at different points in 2026; a customer says its card processing is often down. Store pages name no methods; free registration required to see the catalog
No coupon
39 outside tests on Finnrick ↗
WHO RUNS IT
Lewisville, TX (headquarters) with fulfillment in Flower Mound, TX, per outside reviews; the store FAQ says some orders ship from a South Dakota fulfillment center
more about this seller
Phone (605) 801-0723 (Nextdoor listing).
Another site uses this name
The real store is orbitrexpeptide.is. orbitrexpeptideshop.com is separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
OROS Research
orosresearch.com ↗
18% under
vs median
Price position
Oct 11, 2026Oct 24, 2026
17% below market on Oct 11, 2026, 18% below on Oct 24, 2026.
57
compounds
91%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Ethos Analytics, with an ISO 17025 mark
LOT MATCH
Organized by product then by lot, marking which lot is current, keeping earlier ones, and stating the purchase window for each so a buyer can tell which lot they received.
TESTED FOR
Nine results per lot, each citing its standard.
where this comes from
Purity by HPLC, identity under USP 621, net content by HPLC, multi-vial variance, endotoxins under USP 85, microbial limits under USP 61 and 62, heavy metals by ICP-MS under USP 233, residual solvents under USP 467, and adulterant testing under USP 2251
All major debit and credit cards including American Express; no HSA/FSA or gift cards. After checkout a separate Payment Authorization Form must be completed before the order is processed
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
105 Brady Ct. #B, Cary, NC 27511
more about this seller
Phone +1 (910) 250-8786 (call or text). Around since 2025 (per the store).
See its prices →Visit site ↗
Checked Oct 24, 2026
Panda Peptides
pandapeptides.com ↗
31% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
37% below market on Sep 28, 2026, 31% below on Oct 24, 2026.
41
compounds
83%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik
where this comes from
Verification links in a COA hub
LOT MATCH
Batch-specific lab reports directory with direct Janoshik verification links where available.
TESTED FOR
Purity, identity, content depending on the report.
Credit card (Visa, Mastercard), Cash App (Lightning), Zelle and bank transfer at checkout. Card, Apple Pay and Google Pay run through PsiFi and Crossmint (a crypto payments platform), so buyers get extra processor receipts
No coupon
No Finnrick test results
WHO RUNS IT
Xylo Research Systems LLC (Panda is its research-use catalog)
Another store has a similar name
pandapeptide.ca, in the Toronto area, is a different business.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peak Lab Peptides
peaklabpeptides.com ↗
Partner
2% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
18% below market on Aug 26, 2026, 2% below on Oct 24, 2026.
59
compounds
99%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioviridian
LOT MATCH
COA policy says select batches, COAs on request.
where this comes from
Product pages say every batch
TESTED FOR
Purity, identity.
Card, via a separate off-site payment page (a store reviewer describes being sent to a different site to pay; an outside review lists credit card only). Not stated on the store's own pages. A Trustpilot reviewer says the store accepts Apple Pay
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Peak Lab Peptides LLC
more about this seller
25 First Ave. SW, STE A, Watertown, SD 57201. Phone 605-524-2800. Around since November 2025 (BBB: business started 2025-11-03).
See its prices →Visit site ↗
Checked Oct 24, 2026
PeakForce Labs
peakforcelabs.com ↗
At the median
vs median
Price position
Oct 1, 2026Oct 24, 2026
3% below market on Oct 1, 2026, at the market median on Oct 24, 2026.
40
compounds
98%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioviridian
where this comes from
Named on its homepage certificate and product card.
LOT MATCH
Yes: a lot per product in its library with a certificate viewer.
where this comes from
The library sits behind a terms-and-conditions click-through.
TESTED FOR
Purity by RP-HPLC at 214 nm, identity, content and endotoxin.
where this comes from
Its homepage certificate prints ion peaks; its laboratory's certificates show mass spectrometry identity.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
PeakForce Labs
more about this seller
21040 Highland Knolls Dr, Ste 200 #980, Katy, TX 77450 (a numbered mailbox suite); says it was founded in Houston. Phone 281-270-6625.
See its prices →Visit site ↗
Checked Oct 24, 2026
PeakForm Peptides
peakformpeptides.com ↗
7% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
18% below market on Aug 26, 2026, 7% above on Oct 24, 2026.
32
compounds
86%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics and Horizon Analytical
where this comes from
A third name, CTLA, appears on one historical batch and is not explained
LOT MATCH
A certificate table with a batch number column carrying real values such as PF-2026-108 and DPS-3357280, though some batch numbers repeat across different rows with different purity figures.
TESTED FOR
Purity by HPLC; identity by LC-MS on its Freedom Diagnostics lots and by UPLC with mass spectrometry on its Horizon Analytical lots.
where this comes from
Its page names no identity method; its laboratories' certificates show the methods above. Some batch numbers repeat across rows with different purity figures.
Not listed; a Trustpilot reviewer paid by Zelle
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Penguin Peptides
penguinpeptides.com ↗
18% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
11% above market on Aug 26, 2026, 18% above on Oct 24, 2026.
50
compounds
92%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik Analytical
where this comes from
A public Janoshik report identifies Penguin Peptides with a batch date and purity
LOT MATCH
Lab results page.
where this comes from
Outside review found lot-level matching thin
TESTED FOR
Purity (stated).
Not stated before checkout
No coupon
5 outside tests on Finnrick ↗
WHO RUNS IT
1309 Coffeen Avenue STE 1200, Sheridan, WY 82801 (a widely used registered-agent address)
more about this seller
Phone 951-262-0000 (Riverside, CA-area code).
Another site uses this name
The real store is penguinpeptides.com. penguinpeptidesllc.com is separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peptide Crafters
peptidecrafters.com ↗
14% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
15% below market on Aug 26, 2026, 14% below on Oct 24, 2026.
54
compounds
89%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory, Janoshik and Accumark Labs
where this comes from
Vanguard cites A2LA certificate 6377.01.01
LOT MATCH
Filed by lot code on its lab reports page, with previous batches kept back to 2024, for example lots PC-J2-5AMO, PC-G1-AR16 and PC-G5-BT20.
TESTED FOR
Purity above 99.80% by HPLC-UV/VIS on one lot, identity conforming three times out of three on another, quantity reported as a mean with a standard deviation across three vials, plus endotoxin under USP 85 by LAL and rapid sterility screening by PCR.
Credit card through a PCI-compliant gateway (a reviewer paid by card); unpaid orders cancel after 24 hours
No coupon
No warning letter, no copied name
48 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peptide Partners
peptide.partners ↗
Not enough comparable listings
vs median
33
compounds
68%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Chromate, TrustPointe, Kovera and BioRegen
where this comes from
Named on the store's own pages
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
98 outside tests on Finnrick ↗
WHO RUNS IT
Peptide Partners LLC
more about this seller
8350 Bee Ridge #379, Sarasota, FL 34241 (a numbered mailbox; address as given in FDA letter 735063).
FDA warning letter, August 24 2026
The letter cites its semaglutide, tirzepatide and retatrutide products, SS-31, tesamorelin, PT-141 and its reconstitution solution. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 17, 2026
Peptides 4 Research
peptides4research.com ↗
At the median
vs median
Price position
Sep 28, 2026Oct 24, 2026
7% below market on Sep 28, 2026, at the market median on Oct 24, 2026.
36
compounds
94%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MDx BioAnalytical Laboratory
where this comes from
Named on the certificate images in product galleries.
LOT MATCH
Yes: certificate images with batch numbers in product galleries; no separate library page.
TESTED FOR
Identity and content by mass spectrometry, purity by liquid chromatography, endotoxin.
where this comes from
Each certificate prints a chromatogram and a mass spectrum. The homepage says it tests every peptide twice in US labs.
Not stated before checkout
No coupon
No warning letter, no copied name
20 outside tests on Finnrick ↗
WHO RUNS IT
Peptides 4 Research LLC
See its prices →Visit site ↗
Checked Oct 24, 2026
PeptidesSource
peptidessource.com ↗
5% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
At the market median on Aug 26, 2026, 5% below on Oct 24, 2026.
66
compounds
91%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Bioviridian
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
All major credit cards, Venmo, Zelle, CashApp, crypto; guest checkout allowed
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Philadelphia, PA 19102
more about this seller
Phone 215-859-5900.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peptidology
peptidology.co ↗
7% under
vs median
Price position
Oct 21, 2026Oct 24, 2026
11% below market on Oct 21, 2026, 7% below on Oct 24, 2026.
62
compounds
91%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory, Eagle Analytical Services and Ethos Analytics
where this comes from
Vanguard is named as the issuing laboratory on each certificate; its labs page says which laboratory runs which test.
LOT MATCH
Yes, the lot number on the vial matches the certificate.
where this comes from
Each entry shows the lot, the batch, the test date and the laboratory; its page gives a total of 472 reports.
TESTED FOR
Fifteen tests per lot, each with a result and a USP chapter.
where this comes from
Purity, content and identity by chromatography, which the store describes as an HPLC assay, plus heavy metals, residual solvents, trifluoroacetic acid, endotoxins, container closure, solubility, sterility and an adulterant screen. No mass spectrometry on the certificate.
Not stated before checkout
No coupon
No warning letter, no copied name
16 outside tests on Finnrick ↗
WHO RUNS IT
Peptidology
more about this seller
11111 N Scottsdale Rd, Suite 205, Scottsdale, AZ 85254.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peptira
peptira.com ↗
9% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
7% below market on Aug 26, 2026, 9% above on Oct 24, 2026.
47
compounds
85%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics and Janoshik Analytical
where this comes from
Named in its public test-results library, which lists current and historical batch IDs
LOT MATCH
COA provided with every order.
where this comes from
Public test-results page
TESTED FOR
Purity and identity by HPLC and mass spec.
where this comes from
Says purity typically 97% or higher
Not listed publicly (login required before product pages)
No coupon
No warning letter, no copied name
4 outside tests on Finnrick ↗
WHO RUNS IT
Peptira LLC (Nebraska per WHOIS region)
more about this seller
P.O. Box 391, Chadron, NE 69337 (a PO box).
See its prices →Visit site ↗
Checked Oct 17, 2026
Pepvida Labs
pepvidalabs.com ↗
38% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
37% below market on Oct 20, 2026, 38% below on Oct 24, 2026.
32
compounds
78%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory
where this comes from
Named on the certificate images.
LOT MATCH
Yes: a certificate image per product for the latest batch, with lot number; earlier batches in product photo galleries.
TESTED FOR
Chromatographic purity and quantity by HPLC-UV/VIS.
where this comes from
Its page says each certificate verifies identity; the certificate read shows purity and quantity with no separate identity test and no mass spectrometry.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Pepvida Labs
more about this seller
4521 PGA Blvd #402, Palm Beach Gardens, FL 33418 (its terms call it the legal business address); orders@pepvidalabs.com.
See its prices →Visit site ↗
Checked Oct 24, 2026
Platinum Lion
platinumlionpeptides.com ↗
10% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
12% below market on Oct 20, 2026, 10% below on Oct 24, 2026.
46
compounds
88%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MDx BioAnalytical Laboratory
where this comes from
Named on the certificates; file names also carry Chromate and Uther. The page names no lab.
LOT MATCH
Yes: about 70 certificate files across 49 products, PDFs and images, with batch numbers on the documents.
where this comes from
Three nasal spray entries link to other products' certificates.
TESTED FOR
Identity and content by mass spectrometry, purity by liquid chromatography, endotoxin.
where this comes from
Each MDx certificate prints a chromatogram and a mass spectrum. Some files are republished Peptides 4 Research certificates.
Not stated before checkout; card charges show the descriptor PlatinumLionUSA (FAQ)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Platinum Ventures Group LLC (operator named on its contact page)
more about this seller
Plymouth, MA (street address on its contact page); orders ship from a fulfillment center in California; support@platinumlionpeptides.com. Phone 508-501-5466.
See its prices →Visit site ↗
Checked Oct 24, 2026
Polaris Peptides
polarispeptides.com ↗
9% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
4% above market on Oct 19, 2026, 9% above on Oct 24, 2026.
42
compounds
90%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik
where this comes from
Reports sit under Lab Results on each product page rather than in one library, and carry a key for verifying them at the laboratory
LOT MATCH
Published per batch on the product page, with previous batches kept.
TESTED FOR
Purity and mass reported per vial, for example 99.159% and 99.125% on one LL-37 batch.
where this comes from
The report does not name the analytical method
Credit/debit card, ACH/e-check, bank transfer, Zelle, Chime, CashApp, Apple Pay, crypto (15% off) on the payment page of polaris-peptide.com; an outside audit also lists PayPal and Venmo
No coupon
No warning letter, no copied name
99 outside tests on Finnrick ↗
WHO RUNS IT
Polaris Bioactives LLC
more about this seller
Phone +1 (800) 273-9462.
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Prime Lab Peptides
primelabpeptides.com ↗
17% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
25% above market on Aug 26, 2026, 17% above on Oct 24, 2026.
29
compounds
83%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
LOT MATCH
Batch-specific COA for what you order (stated).
TESTED FOR
Identity and purity (stated).
Card through a PCI-compliant processor; neutral billing descriptor on statements. A Trustpilot reviewer had initial card trouble
No coupon
No Finnrick test results
WHO RUNS IT
PrimePeptide Laboratories Inc.
A typo domain copies this store
The real store is primelab-peptides.com. primeladpeptides.com copies its FAQ. Prime Labs at getprimelabs.com is a different business.
See its prices →Visit site ↗
Checked Oct 24, 2026
Prime Pep Solutions
primepepsolutions.com ↗
Partner
At the median
vs median
Price position
Oct 10, 2026Oct 24, 2026
6% below market on Oct 10, 2026, at the market median on Oct 24, 2026.
28
compounds
95%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Kovera Labs
where this comes from
Named on its COAs
LOT MATCH
Yes. Each certificate covers one batch and shows the batch number and test date.
where this comes from
Certificate library at primepepsolutions.com/coas. Certificates are shown for some sizes only.
TESTED FOR
Purity by HPLC and identity by mass spectrometry.
Visa, Mastercard, American Express and Discover, processed by Stripe
CouponPEPTIDEDECODING
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Prime Holdings Solutions LLC, operating Prime Peptide Solutions
more about this seller
305 Knickerbocker Avenue, Bohemia, NY 11716. Phone (631) 601-4596 (text only).
See its prices →Visit site ↗
Checked Oct 24, 2026
Prime Peptides
primepeptides.co ↗
32% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
39% above market on Aug 26, 2026, 32% above on Oct 24, 2026.
22
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik Analytical
where this comes from
Named on its FAQ
LOT MATCH
Active COAs on a COA page and each product page.
where this comes from
Verifiable at janoshik.com/verify with the task number and key on the COA
TESTED FOR
Identity by mass spectrometry (stated).
Not listed; the return policy refers to refunds posting to a bank or credit card
No coupon
19 outside tests on Finnrick ↗
WHO RUNS IT
Prime Vitality Inc (on an earlier contact page)
more about this seller
133 E De La Guerra St Ste 14, Santa Barbara, CA 93101 (current contact page); earlier pages gave 735 State St Ste 524, Santa Barbara. Phone (805) 225-3085.
FDA warning letter, December 10 2024
Letter 695156 went to Prime Vitality Inc, trading as Prime Peptides. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 24, 2026
Prism Labs
prismlabs.store ↗
Partner
13% under
vs median
Price position
Oct 15, 2026Oct 24, 2026
14% below market on Oct 15, 2026, 13% below on Oct 24, 2026.
27
compounds
93%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Proof Point Analytical
LOT MATCH
Each product page lists recent lots with lot number, content and purity.
where this comes from
Each carries a certificate with an access code. Published reports cover past lots and do not name the lot a new order ships with.
TESTED FOR
Purity, measured content, identity (HPLC), heavy metals (ICP-MS), sterility (PCR) and endotoxin (USP <85>).
where this comes from
Lab stated as ISO/IEC 17025 accredited
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Autry Pond Rd, San Antonio, TX 78247 (no street number); support@prismlabs.store; (512) 862-7396
See its prices →Visit site ↗
Checked Oct 24, 2026
Proxiva Labs
proxivalabs.store ↗
At the median
vs median
Price position
Aug 26, 2026Oct 24, 2026
11% above market on Aug 26, 2026, at the market median on Oct 24, 2026.
33
compounds
93%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Analytical Formulations Inc.
where this comes from
Named in its third-party verified section and beneath its sample certificate
LOT MATCH
Batch-specific COAs shown on listings (stated).
TESTED FOR
Purity, identity, sterility, contaminants (stated).
where this comes from
Its laboratory's certificate for another store shows UV/Vis spectrophotometry rather than HPLC or mass spectrometry; no Proxiva certificate has been opened.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 17, 2026
PSPeptides
pspeptides.com ↗
Partner
At the median
vs median
Price position
Oct 19, 2026Oct 24, 2026
At the market median on Oct 19, 2026, at the market median on Oct 24, 2026.
56
compounds
88%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory and North American Diagnostics
where this comes from
Vanguard cites A2LA accreditation certificate 6377.01.01
LOT MATCH
Published per product and per vial size, with older reports kept, each tied to a lot number and a laboratory ID.
TESTED FOR
Identity, chromatographic purity and quantity by HPLC-UV/VIS, plus mass identification, and separate heavy metals, endotoxin, sterility and fentanyl screening reports.
Credit cards (Visa, Mastercard, Amex, Discover), Afterpay, Klarna, Apple Pay, Google Pay, Shop Pay, CashApp, Zelle (its own payments page)
CouponPEPTIDEDECODING saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Temecula, California (cGMP-compliant facility named on the home page; no street address)
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Pure Bio Labs
purebiolabs.com ↗
Partner
67% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
72% above market on Sep 28, 2026, 67% above on Oct 24, 2026.
51
compounds
98%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Ethos Analytics
where this comes from
Named on the certificates; the store's pages say an ISO 17025 accredited laboratory.
LOT MATCH
Yes: 105 report pages reached through a product picker, each showing the certificate with its batch number and dates.
where this comes from
The picker is the only way in; the list shows product names, not lots.
TESTED FOR
Assay and purity by HPLC, identity by retention time; endotoxin, heavy metals and microbiology.
where this comes from
Its page description says HPLC and LC-MS; its certificates show retention-time identity and no mass spectrometry.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Pure Health Peptides
purehealthpeptides.com ↗
18% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
18% below market on Aug 26, 2026, 18% below on Oct 24, 2026.
86
compounds
99%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Ethos Analytics and MZ Biolabs
where this comes from
Ethos on current lots, named on its process page and certificates; MZ Biolabs on earlier lots.
LOT MATCH
Yes: about 300 certificate PDFs across some 42 products, each listed by batch ID.
where this comes from
Test dates are on the documents, not the listing. Some files are linked under more than one product.
TESTED FOR
Purity by HPLC, identity by retention time on current Ethos lots; identity by mass spectrometry on earlier MZ Biolabs lots.
where this comes from
Its process page says identity is confirmed by HPLC-MS; its current certificates show retention time.
cards, no Mastercard
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Sep 28, 2026
Pure Lab Peptides
purelabpeptides.com ↗
39% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
24% above market on Sep 28, 2026, 39% above on Oct 24, 2026.
74
compounds
83%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Chromate
where this comes from
Each certificate carries a verification access code
LOT MATCH
Issued per lot with a report number, for example lot 71556 under report 39707.
where this comes from
The documents are summaries the store prepared from the laboratory's report, with a link to the third-party original
TESTED FOR
Identity conforming and chromatographic purity between 99.001% and 99.270% by RP-HPLC with UV detection, against the labeled content.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Pure Lab LLC (named as the legal seller)
more about this seller
7901 4th St N, Saint Petersburg, FL 33702. Phone 855-787-3542. site from 2024.
See its prices →Visit site ↗
Checked Oct 24, 2026
Real Peptides
realpeptides.co ↗
Partner
24% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
31% below market on Sep 28, 2026, 24% below on Oct 24, 2026.
57
compounds
84%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics and Kovera (named on its capsule product pages)
where this comes from
Published lot reports covering identity, purity, net content, sterility, endotoxin and heavy metals
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
150 26th Ave N, Saint Petersburg, FL 33704; ships from Florida or California
more about this seller
Phone +1 (813) 330-0290.
See its prices →Visit site ↗
Checked Oct 24, 2026
Ryder Research Supply
ryderresearch.co ↗
30% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
11% above market on Aug 26, 2026, 30% above on Oct 24, 2026.
11
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MZ Biolabs, and a lab it calls Analytical Chemistry Teaching Lab
where this comes from
Named in its public results table, with exact lots and readable results
LOT MATCH
Testing and COA page.
where this comes from
Lot number printed on each vial label
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Major credit and debit cards, ACH transfers and 'select digital payment platforms' (not named)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
more about this seller
Around since 2025 (per the store's 'EST. 2025').
See its prices →Visit site ↗
Checked Oct 24, 2026
Stemcode Peptides
stemcodepeptides.com ↗
119% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
100% above market on Aug 26, 2026, 119% above on Oct 24, 2026.
31
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Qalitex, Freedom Diagnostics, Janoshik Analytical and Nutri Analytical
where this comes from
All four named on its lab results page
LOT MATCH
COAs on each product page.
where this comes from
Lot-specific on request
TESTED FOR
Identity, purity, potency by HPLC (stated).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Stemcode Peptides, registered in Wyoming
more about this seller
1309 Coffeen Ave STE 1200, Sheridan, WY 82801 (a widely used registered-agent address). Phone (619) 436-5583 (San Diego-area code).
See its prices →Visit site ↗
Checked Oct 24, 2026
Synthro Lab
synthrolab.com ↗
12% over
vs median
Price position
Oct 20, 2026Oct 24, 2026
13% above market on Oct 20, 2026, 12% above on Oct 24, 2026.
18
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named with a batch number and test date on its product page; the library page names no lab.
LOT MATCH
Yes on product pages: a certificate image with batch number and test date.
where this comes from
Its library lists 18 purity values with no lot numbers, dates or documents.
TESTED FOR
Purity by HPLC; identity by LC-MS at its laboratory.
where this comes from
Its verify link points to aureviabio.com rather than to the laboratory, and the certificate file is named for GLP-3 on a product sold as RT.
Credit and debit cards, PayPal, ACH, Zelle, bank transfer and Bitcoin; card statements do not show the store name
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Synthro Lab LLC (footer: Synthro Science)
more about this seller
8400 Delmar Blvd, Saint Louis, MO 63124; info@synthrolab.com. Phone +61 449 686 150 (an Australian number).
See its prices →Visit site ↗
Checked Oct 24, 2026
TrueLab Peptides
truelabpeptides.com ↗
At the median
vs median
Price position
Oct 1, 2026Oct 24, 2026
5% below market on Oct 1, 2026, at the market median on Oct 24, 2026.
75
compounds
99%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named on the certificate images; the store's pages name no lab.
LOT MATCH
Yes: a certificate image per product with its lot number.
TESTED FOR
Identity by LC-MS, purity by HPLC-UV, net content and endotoxin.
where this comes from
Lot numbers appear in the certificate file names and on the documents.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
TrueLab Peptides (True Lab Peptides)
more about this seller
Phone +1 954-889-4891.
See its prices →Visit site ↗
Checked Oct 24, 2026
Trustedpeps
trustedpeps.us ↗
47% under
vs median
Price position
Oct 21, 2026Oct 24, 2026
48% below market on Oct 21, 2026, 47% below on Oct 24, 2026.
22
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories and Freedom Diagnostics
where this comes from
Named on the certificates themselves, ILS on 10 lots and Freedom Diagnostics on 15.
LOT MATCH
Yes, the lot number on the vial matches the certificate.
where this comes from
26 reports across 25 products, each with a certificate number, an analysis date and a verification link on the laboratory's portal.
TESTED FOR
Purity by HPLC; identity by LC-MS on its Freedom Diagnostics lots, by retention time on its ILS lots.
where this comes from
Its library states the identity method per lot in page text.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
TRPP Research LLC (West Virginia), doing business as TrustedPeps
more about this seller
PO Box 5023, Vienna, WV 26105.
See its prices →Visit site ↗
Checked Oct 24, 2026
Tydes
tydes.is ↗
7% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
8% above market on Oct 19, 2026, 7% above on Oct 24, 2026.
54
compounds
93%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
TrustPointe Analytics and Janoshik
where this comes from
Named on the certificates themselves, which carry verification keys, though not in the page text
LOT MATCH
About 50 batches listed, each with its own batch number and a link to a full report, plus separate endotoxin reports on many of them.
TESTED FOR
Purity grades published per batch, from 99.12% to 99.89% on the batches that carry one, and bacterial endotoxin under USP 85.
where this comes from
No purity method is named
Not shown publicly: the store requires a login
No coupon
No warning letter, no copied name
41 outside tests on Finnrick ↗
WHO RUNS IT
None found
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Umbrella Labs
umbrellalabs.is ↗
21% over
vs median
Price position
Oct 21, 2026Oct 24, 2026
20% above market on Oct 21, 2026, 21% above on Oct 24, 2026.
106
compounds
92%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory and MZ BioLabs
where this comes from
Named per certificate on its peptide COA page; its SARM certificates also name Pharos Diagnostics, Colmaric Analyticals and Freedom Diagnostics.
LOT MATCH
Yes, each certificate shows a lot number of its own.
where this comes from
The index is arranged by product and test date rather than by lot, so a reader can check only the lot posted for a product.
TESTED FOR
Purity by HPLC-UV/VIS on its Vanguard certificates; identity by mass spectrometry on its MZ BioLabs certificates.
where this comes from
Its MZ BioLabs certificates are images; that laboratory's certificate format reports HPLC-UV purity and MS identity with measured mass.
Personal debit cards (logged in), same-day bank payment, Bitcoin (BTCPay) and US bank account (5% off)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Umbrella Labs (legal entity not stated)
more about this seller
3280 E Hemisphere Loop #190, Tucson, AZ 85706. Phone 1-855-471-8544.
See its prices →Visit site ↗
Checked Oct 24, 2026
Validated Peptides
validatedpeptides.com ↗
Partner
Not enough comparable listings
vs median
16
compounds
88%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories
where this comes from
Named on the certificates opened from its library.
LOT MATCH
Yes: 21 batch entries across 16 products with lot numbers and test dates, each opening the certificate in a viewer.
TESTED FOR
Purity by HPLC, identity by retention time; fentanyl, heavy metals, sterility and endotoxin.
where this comes from
Its page says LC-MS confirms molecular weight; its certificates show retention-time identity and no mass spectrometry.
Not listed on the about, FAQ or refunds pages ('secure checkout' only); methods appear at checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Value Research Labs
valueresearchlabs.com ↗
22% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
40% below market on Aug 26, 2026, 22% below on Oct 24, 2026.
40
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Horizon Analytical
where this comes from
Named in the header of its sample certificate, which reads Value Research Labs, Horizon Analytical
LOT MATCH
COA archive viewable for every product.
TESTED FOR
Identity and purity by HPLC and mass spec (stated).
where this comes from
Its Trustpilot blurb adds heavy metals, endotoxin, sterility, fill
Third-party processors, not named; a Trustpilot reviewer reports a duplicate $258.05 charge
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Florida (per its Trustpilot description; no street address on the site)
See its prices →Visit site ↗
Checked Oct 24, 2026
Veratis Bio
veratisbio.com ↗
18% over
vs median
Price position
Oct 21, 2026Oct 24, 2026
18% above market on Oct 21, 2026, 18% above on Oct 24, 2026.
13
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
LOT MATCH
Yes: every vial carries a lot number and a QR code that opens that lot's COA.
where this comes from
Its archive lists 16 current lots and 6 older ones and says none have been removed
TESTED FOR
Identity by LC-MS and purity by HPLC-UV on its Freedom Diagnostics certificates.
where this comes from
Every lot in its archive names Freedom Diagnostics.
Credit or debit card, USDC or Bitcoin, Venmo and Zelle
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Veratis (legal entity not stated)
more about this seller
30 N Gould St, Suite R, Sheridan, WY 82801; support@veratisbio.com. Phone 615-788-2517.
See its prices →Visit site ↗
Checked Oct 24, 2026
Verified Peptides
verifiedpeptides.com ↗
6% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
12% below market on Aug 26, 2026, 6% below on Oct 24, 2026.
62
compounds
76%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik
where this comes from
Reports verifiable at janoshik.com/verify
LOT MATCH
Every batch tested.
where this comes from
Vials labeled with the batch number that matches the lab report; public Lab Tests archive
TESTED FOR
Identity, purity, concentration.
Standard credit card; reviewers mention multiple payment options
No coupon
No warning letter, no copied name
36 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
more about this seller
Around since 2020 (per the store).
See its prices →Visit site ↗
Checked Oct 24, 2026
Vortex Research
vortexresearch.net ↗
Partner
14% under
vs median
24
compounds
100%
in stock
Testing
5 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories and Freedom Diagnostics
where this comes from
ILS on 11 of its 13 reports and Freedom Diagnostics on 2, each named on the report itself.
LOT MATCH
Yes, a lab report per lot.
where this comes from
Only 4 of its 13 reports were tested for Vortex Research; the other 9 were issued to a wholesale partner facility.
TESTED FOR
Purity by HPLC; identity by LC-MS on 2 of 13 reports, by retention time on the other 11.
where this comes from
Its two Freedom Diagnostics reports, VRTX-RT and GHK-Cu, print a mass spectrum. Its tirzepatide and every partner-facility lot are identified by retention time only.
Not stated before checkout
CouponPEPTIDEDECODING saves 30%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Vortex Research (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 24, 2026
Accelerate Labs
accelerate-labs.us ↗
11% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
82% above market on Aug 26, 2026, 11% below on Oct 24, 2026.
28
compounds
100%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MZ Biolabs
LOT MATCH
Says every product comes with a COA.
TESTED FOR
Purity (stated).
All major credit and debit cards, including American Express; no HSA/FSA. A Trustpilot reviewer mentions being called to pay an emailed invoice
No coupon
No warning letter, no copied name
20 outside tests on Finnrick ↗
WHO RUNS IT
Accelerate Labs of Florida, LLC
more about this seller
382 NE 191st St PMB 418694, Miami, FL 33179 (a private mailbox); support team described as Tampa-based.
See its prices →Visit site ↗
Checked Oct 24, 2026
Aero Peptides
aeropeptides.com ↗
Partner
6% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
19% below market on Sep 28, 2026, 6% below on Oct 24, 2026.
21
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent labs test identity (HPLC, MS) and endotoxin (LAL) per batch; COAs on request and a lab-results page
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Alpha Omega
alphaomegapeptide.com ↗
3% over
vs median
Price position
Oct 20, 2026Oct 24, 2026
3% above market on Oct 20, 2026, 3% above on Oct 24, 2026.
48
compounds
98%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Freedom Diagnostics Testing appears only on a page headed is Alpha Omega Peptide legit
LOT MATCH
Says every lot ships with its own certificate, searchable by lot number.
where this comes from
Its certificate table needs JavaScript and showed no rows
TESTED FOR
The store does not say.
Credit cards and other methods shown at checkout (terms)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Alpha & Omega Peptide (entity type not stated)
more about this seller
6586 W Atlantic Ave, Ste #1112, Delray Beach, FL 33446; support@alphaomegapeptide.com. Phone (888) 453-0711. Around since mid 2024.
See its prices →Visit site ↗
Checked Oct 24, 2026
AMC Essentials
amc-essentials.com ↗
11% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
11% below market on Oct 20, 2026, 11% below on Oct 24, 2026.
52
compounds
99%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store says third-party testing with verifiable certificates.
LOT MATCH
No: certificates are emailed with the order or on request; none are published.
TESTED FOR
Purity, endotoxin, heavy metals and sterility (stated).
where this comes from
Product pages show a tested milligram figure per strength and a reports tab that says to email for the current certificate.
ACH (FAQ; a failed ACH payment carries a $20 fee); no other method stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
AMC Essentials LLC
more about this seller
P.O. Box 88, Montgomery, NY 12549; cs@amc-essentials.com. Phone (917) 274-7772.
See its prices →Visit site ↗
Checked Oct 24, 2026
Ameano Peptides
ameanopeptides.com ↗
Partner
9% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
18% below market on Aug 26, 2026, 9% below on Oct 24, 2026.
46
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Library by product, current and past certificates kept.
TESTED FOR
Purity and identity (per an outside review).
Major credit and debit cards: Visa, MasterCard, American Express, Discover, JCB (the policy list may continue past the snippet)
No code required saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Ameano Peptides LLC, 11323 Arcade Dr. STE 105, Little Rock, AR 72212
more about this seller
Phone +1 877 312 1560.
See its prices →Visit site ↗
Checked Oct 24, 2026
Amino Amigos
aminoamigos.com ↗
3% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
14% above market on Aug 26, 2026, 3% above on Oct 24, 2026.
30
compounds
98%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
COAs with batch numbers, dates and purity (per an outside review).
where this comes from
Finnrick's report summary mentions a COA outage
TESTED FOR
Purity.
Not stated before checkout
No coupon
37 outside tests on Finnrick ↗
WHO RUNS IT
A New Mexico LLC (per Finnrick's public report summary)
more about this seller
Albuquerque, NM (per its Facebook page and an outside review; no street address found on the store). Phone 505-309-6441 (per an outside review).
Another site uses this name
The real store is aminoamigos.com. aminoamigosusa.com is a separate site using the name.
See its prices →Visit site ↗
Checked Oct 24, 2026
Amino Sequence
aminosequence.com ↗
Not enough comparable listings
vs median
22
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Batch COAs by test date on each product page, with the tested amount per vial (current and earlier batches).
TESTED FOR
Quantity, purity, conformity or variance and endotoxin (stated).
Credit or debit card, Zelle and eCheck
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Amino Sequence (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 24, 2026
AminoVault
aminovault.com ↗
Partner
38% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
20% above market on Aug 26, 2026, 38% above on Oct 24, 2026.
29
compounds
84%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
An outside review says MDx BioAnalytical
LOT MATCH
Yes, batch-level COAs.
TESTED FOR
Purity, identity.
where this comes from
Says each batch is tested twice
American Express, Visa, Mastercard (footer card image); outside reviews say card only, no crypto
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
AminoVault, LLC
more about this seller
Los Angeles, CA (no street address published). site live since December 2023; launch press release October 2025.
See its prices →Visit site ↗
Checked Oct 24, 2026
Apex Peptides
apexpeptideslab.com ↗
Partner
Not enough comparable listings
vs median
11
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MZ BioLabs
where this comes from
Named in its FAQ as an accredited third-party laboratory in the United States
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Not stated before checkout
Couponpeptidedecoding saves 15% on a first order
No Finnrick test results
WHO RUNS IT
No company name or address published.
more about this seller
Phone (561) 369-6083 (a Palm Beach County, FL area code).
Other Apex-named sites exist
The real store is apexpeptideslab.com. Apex Peptide Supply is a different business, not a copy of this one.
See its prices →Visit site ↗
Checked Sep 28, 2026
Apollo Peptide Sciences
apollopeptidesciences.com ↗
Partner
39% over
vs median
Price position
Sep 16, 2026Oct 24, 2026
30% above market on Sep 16, 2026, 39% above on Oct 24, 2026.
15
compounds
96%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside reviews say Janoshik
LOT MATCH
COAs and endotoxin reports published per product.
TESTED FOR
Purity, quantity, endotoxin.
Card (footer shows Visa, Discover and Amex logos, no Mastercard; charges appear as APOLLO PEPTIDE SCIENCES) and eCheck/ACH payable to Apollo Peptides LLC
No coupon
No warning letter, no copied name
4 outside tests on Finnrick ↗
WHO RUNS IT
Apollo Peptide Sciences LLC
more about this seller
1000 Town Center Drive, Suite 300 #1043, Oxnard, CA 93036 (a suite-number mailbox address). Phone (800) 598-9220.
See its prices →Visit site ↗
Checked Oct 24, 2026
Ascension Peptides
ascensionpeptides.com ↗
Partner
11% over
vs median
Price position
Sep 1, 2026Oct 24, 2026
10% above market on Sep 1, 2026, 11% above on Oct 24, 2026.
35
compounds
100%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside reviews say SafeCert Labs and MZ Biolabs
LOT MATCH
Yes, searchable by product, SKU, batch or lot.
TESTED FOR
Purity, identity, endotoxin (per outside reviews).
Credit cards (FAQ: Visa and MasterCard; terms: all major credit cards; shipping policy: Visa) and ACH bank draft through LinkMoney; the FAQ says more options are coming
CouponPEPTIDEDEC saves 50%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
834-F South Perry St., Unit 130, Castle Rock, CO 80104 (from the Trustpilot business profile, per an outside review; ships from Castle Rock)
more about this seller
Phone (303) 518-6550. Around since 2024 (per an outside review).
See its prices →Visit site ↗
Checked Oct 24, 2026
Astro Peptides
astropeptidesusa.com ↗
29% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
20% above market on Oct 19, 2026, 29% above on Oct 24, 2026.
11
compounds
94%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
None published.
where this comes from
The store says to write in with the product and batch number, and that its documentation page does not display test reports or certify a particular result
TESTED FOR
Describes itself as dual-tested including endotoxin.
Zelle (per reviewers; one was told the store had changed its Zelle account) and credit card (per an outside directory)
No coupon
No warning letter, no copied name
29 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Atomik Labz
atomiklabz.com ↗
7% over
vs median
Price position
Oct 18, 2026Oct 24, 2026
2% above market on Oct 18, 2026, 7% above on Oct 24, 2026.
78
compounds
99%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Visa/MC, Venmo, crypto
No coupon
No warning letter, no copied name
44 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Atomix Research
atomixresearch.com ↗
3% under
vs median
Price position
Sep 12, 2026Oct 24, 2026
14% below market on Sep 12, 2026, 3% below on Oct 24, 2026.
35
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Product pages, where its certificates sit, open to registered accounts only.
LOT MATCH
No: product pages open to registered accounts only.
where this comes from
The page shows the lot as N/A and a test date of August 2025.
TESTED FOR
Purity, identity and composition by HPLC and mass spectrometry (stated).
where this comes from
Nothing a visitor can open shows a method or a laboratory.
Not stated before checkout
No coupon
No Finnrick test results
WHO RUNS IT
None found
Another site uses this name
The real store is atomixresearch.com. atomix-research.com is separate. Atomik Labz is a different business again.
See its prices →Visit site ↗
Checked Oct 24, 2026
Axon Peptide
axonpeptide.com ↗
11% under
vs median
Price position
Oct 19, 2026Oct 24, 2026
16% below market on Oct 19, 2026, 11% below on Oct 24, 2026.
41
compounds
94%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ARS Labs on every batch, then Kovera Labs or Freedom Diagnostics on a randomized subset
where this comes from
Named on its verification page
LOT MATCH
Lot verification runs on a site of its own, linked as Verify any lot, though its records could not be read to confirm what they hold.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Axon Research Supply, LLC
more about this seller
site built August 2026.
See its prices →Visit site ↗
Checked Oct 24, 2026
BioCollex
biocollexresearch.com ↗
29% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
23% above market on Oct 19, 2026, 29% above on Oct 24, 2026.
22
compounds
96%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Yes: each product lists the lot number, analysis date and COA PDF.
TESTED FOR
Purity, identity and sterility (stated).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Biocollex Research
more about this seller
5000 Thayer Center, Suite C, Oakland, MD 21550.
See its prices →Visit site ↗
Checked Oct 24, 2026
BioEdge Research Labs
bioedgeresearchlabs.com ↗
1% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
4% below market on Sep 28, 2026, 1% below on Oct 24, 2026.
60
compounds
85%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside review: MDx, Kovera
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Zelle, e-check, card via BarterPay
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
BioGenix Peptides
biogenixpeptides.com ↗
23% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
23% above market on Oct 19, 2026, 23% above on Oct 24, 2026.
52
compounds
88%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says US-based analytical testing of each production lot
LOT MATCH
None published.
where this comes from
No certificate or testing page exists anywhere on the store
TESTED FOR
One line claiming US laboratory third-party HPLC and MS testing, with no certificate or testing page anywhere on the store.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Oct 24, 2026
BioLongevity Labs
biolongevitylabs.com ↗
Partner
54% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
47% above market on Aug 26, 2026, 54% above on Oct 24, 2026.
53
compounds
74%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
SafeCert Labs
where this comes from
Named on the store's own pages, alongside HPLC and LC-MS
LOT MATCH
Says all COAs are available before purchase.
TESTED FOR
Says three independent labs test every batch.
All major credit cards; guest checkout allowed
No coupon
No warning letter, no copied name
33 outside tests on Finnrick ↗
WHO RUNS IT
F2 Nutrition LLC (contact page says Inc.), dba BioLongevity Labs
more about this seller
F2 Nutrition LLC, 405 Rothrock Rd #106, Akron, OH 44321. Phone +1 (855) 699-5333.
See its prices →Visit site ↗
Checked Oct 24, 2026
BioNova Peptides
bionovapeptides.com ↗
Partner
9% under
vs median
Price position
Oct 10, 2026Oct 24, 2026
13% below market on Oct 10, 2026, 9% below on Oct 24, 2026.
19
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Yes for most products.
where this comes from
Its lab-results page lists a lot or accession number, purity and test date per product; several say the verified batch record is pending publication
TESTED FOR
Purity (the results page lists purity only).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
BioNova Peptides
See its prices →Visit site ↗
Checked Oct 17, 2026
Bioscience Peptides
bioscience-peptides.com ↗
5% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
6% below market on Aug 26, 2026, 5% above on Oct 24, 2026.
20
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
Says 'carefully sourced and tested'.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Oct 24, 2026
Biotech Peptides
biotechpeptides.com ↗
7% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
3% above market on Aug 26, 2026, 7% above on Oct 24, 2026.
71
compounds
83%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
cards
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
Another site uses this name
The real store is biotechpeptides.com, with the s. biotechpeptide.co still shows unfinished template text on its payments page.
See its prices →Visit site ↗
Checked Oct 24, 2026
Blue Sky Peptide
blueskypeptide.com ↗
25% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
25% above market on Aug 26, 2026, 25% above on Oct 24, 2026.
42
compounds
100%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside review: MZ Biolabs
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Per a January 2024 outside review: card through Mesh Payments (US orders under $1,000 only), e-check (US only, extra verification), crypto through NOWPayments (Bitcoin, Ether, USDC). A 2026 Trustpilot reviewer paid by blockchain. Not confirmed on the store's own pages
No coupon
No Finnrick test results
WHO RUNS IT
Palm Beach, FL 33403 per a business directory listing (no street, placeholder phone); the store lists no address
more about this seller
Around since 2013 (per outside review; reviewers report buying since 2015).
Another site uses this name
The real store is blueskypeptide.com, singular. blueskypeptides.us.com is a look-alike.
See its prices →Visit site ↗
Checked Oct 24, 2026
Bluum Peptides
bluumpeptides.com ↗
Not enough comparable listings
vs median
46
compounds
96%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik Analytical or BioRegen
where this comes from
Named on its home page and FAQ
LOT MATCH
Full COAs published.
where this comes from
Each lot's best-by date on the vial and COA
TESTED FOR
Identity, purity, potency.
where this comes from
Sequence confirmation (stated)
Options shown at checkout, not listed; the billing policy refers to card numbers not being stored, and statements may show Bluum or its processor's descriptor. Runs its own hosted checkout (BluumPay)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Bulk Peptides
bulkpeptides.com ↗
Not enough comparable listings
vs median
42
compounds
92%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
One COA file name contains "Ruo.Bio-Report"
LOT MATCH
Yes: COA library lists lot numbers per product, current and earlier (about 42 listings).
TESTED FOR
Content and purity (stated).
Bank transfer, Zelle or crypto for same-day payment; its terms also list Visa, Mastercard, American Express, Discover and ACH or wire
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Bulkpeptides.com, "a subsidiary of RUO" (its footer; links to Ruo Bio)
See its prices →Visit site ↗
Checked Oct 24, 2026
Cernum Biosciences
cernumbiosciences.com ↗
40% over
vs median
Price position
Sep 5, 2026Oct 24, 2026
13% above market on Sep 5, 2026, 40% above on Oct 24, 2026.
20
compounds
56%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says accredited laboratories
LOT MATCH
Third-party reports published.
TESTED FOR
Purity and composition (stated).
Not stated before checkout. A 2026 Trustpilot complaint says the buyer was charged international transaction fees
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
more about this seller
Presents as US-based, but a 2026 Trustpilot complaint says it is an international (Chinese) operation that did not disclose this and charged international transaction fees.
Where it ships from is unclear
The store presents as US-based. A 2026 Trustpilot complaint says it is a Chinese operation that did not disclose this and charged international transaction fees. We have not been able to verify either account.
See its prices →Visit site ↗
Checked Oct 24, 2026
Certified Peptides
certified-pep.com ↗
21% over
vs median
Price position
Oct 21, 2026Oct 24, 2026
22% above market on Oct 21, 2026, 21% above on Oct 24, 2026.
67
compounds
99%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory
where this comes from
Olympia, Washington, named on its lab testing page, which links a search of the laboratory's own report site filtered to this brand.
LOT MATCH
Certificates appear on product pages as images.
where this comes from
Its COA library returns no entries, and no lot number appears as text on a product page.
TESTED FOR
Purity, quantity, identity, endotoxins, heavy metals and sterility, as the store sets out its panel.
where this comes from
Methods are named on its testing page rather than against a published result.
Not stated before checkout
No coupon
No warning letter, no copied name
5 outside tests on Finnrick ↗
WHO RUNS IT
Certified Peptides (legal entity not stated)
more about this seller
Rochester, WA (no street address); support@certified-pep.com.
See its prices →Visit site ↗
Checked Oct 24, 2026
Chimera Peptides
chimera-peptides.com ↗
Not enough comparable listings
vs median
52
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
COAs shared in its Discord from group buys and member submissions
LOT MATCH
Finnrick's public summary notes batch IDs are often missing.
TESTED FOR
Purity and identity where tested.
Not stated before checkout; buyers describe paying through a 'middle man service' and payment 'snags', and outside reviews mention crypto options and restrictive payment terms
No coupon
No warning letter, no copied name
23 outside tests on Finnrick ↗
WHO RUNS IT
No company name or address published.
more about this seller
Phone 408-762-5460 (text only). International seller with a US domestic fulfillment option. Moved from chimerapeptides.com (registered about six months ago behind a privacy service) to chimera-peptides.com in spring 2026, and several April-May 2026 reviewers report paying and receiving nothing, with emails bouncing..
See its prices →Visit site ↗
Checked Oct 24, 2026
Concordia Research Chems
concordiarc.com ↗
36% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
26% above market on Sep 28, 2026, 36% above on Oct 24, 2026.
19
compounds
95%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik Analytical
where this comes from
Named on its home page: third-party tested at Janoshik Analytical
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Concordia Research Chems LLC
more about this seller
1440 W. Taylor St #1879, Chicago, IL 60607 (a numbered mailbox). Phone +1 (630) 809-9668.
See its prices →Visit site ↗
Checked Oct 24, 2026
Core Peptides
corepeptides.com ↗
7% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
At the market median on Aug 26, 2026, 7% above on Oct 24, 2026.
84
compounds
93%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Vanguard Laboratory
where this comes from
Named in its FAQ as an independent A2LA-accredited US laboratory
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC, as the store describes it.
Visa, Mastercard, American Express, Discover, plus Venmo, Zelle and CashApp (from an outside reviewer's 2024 checkout walkthrough)
No coupon
3 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
Four other sites use this name
The real store is corepeptides.com. A buyer who ordered from one of the copies paid, then was asked to send another $300 before it would ship.
See its prices →Visit site ↗
Checked Oct 24, 2026
Core Peptides Research
corepeptidesresearch.com ↗
7% over
vs median
Price position
Sep 12, 2026Oct 24, 2026
4% above market on Sep 12, 2026, 7% above on Oct 24, 2026.
82
compounds
95%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store says HPLC-UV for purity and LC-MS for identity.
LOT MATCH
No: its COA page lists no certificates; batch documentation is available on request.
where this comes from
One representative chromatogram image is shown for lot C74231.
TESTED FOR
Purity by HPLC-UV and identity by LC-MS (stated).
where this comes from
No certificate, method or laboratory is shown.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Oct 24, 2026
Core Research Peptides
coreresearchpeptides.com ↗
Partner
5% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
2% below market on Sep 28, 2026, 5% above on Oct 24, 2026.
22
compounds
92%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Janoshik appears only as a verification route, with keys checkable at janoshik.com/verify, and the store does not say Janoshik tested any product. Says third-party HPLC tested with a certificate library
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Visa and Mastercard, plus Bitcoin, Zelle, Cash App and Venmo
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Austin, Texas (headquarters; no street address on the site); ships from Austin
more about this seller
Phone (512) 643-4570 (call or text). site built August 2026 (upload dates).
See its prices →Visit site ↗
Checked Oct 24, 2026
Crownwell Research
crownwellresearch.com ↗
Partner
Not enough comparable listings
vs median
25
compounds
88%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Its COA library requires a login
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Crownwell Research
more about this seller
7364 Kathleen Road, Lakeland, FL 33810. Phone 321-315-2583.
Catalogue requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Crush Research
crushresearch.com ↗
35% under
vs median
Price position
Oct 21, 2026Oct 24, 2026
34% below market on Oct 21, 2026, 35% below on Oct 24, 2026.
34
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Yes: its testing page lists each batch number with test date, number of vials sampled, average net content and purity, and links each COA.
TESTED FOR
Net content and purity on 2 to 3 vials per batch, endotoxins on every batch, heavy metals and sterility on recent batches.
Visa, Mastercard, Zelle, crypto and bank transfer
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Crush Research Supply Company
more about this seller
8352 Topanga Canyon Blvd, Suite 200, Canoga Park, CA 91304. Phone (818) 858-1133. Around since October 2025.
See its prices →Visit site ↗
Checked Oct 24, 2026
Edge Peptides
edgepeptides.com ↗
Not enough comparable listings
vs median
54
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik, Chromate, MZ Biolabs
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Crypto only as of 28 Sep 2026. The store's April 2026 meta description still says it accepts credit card
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Eros Peptides
erospeptides.com ↗
29% under
vs median
Price position
Sep 5, 2026Oct 24, 2026
36% below market on Sep 5, 2026, 29% below on Oct 24, 2026.
67
compounds
91%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC, as the store describes it.
Not stated before checkout
No coupon
3 outside tests on Finnrick ↗
WHO RUNS IT
3350 Riverwood Parkway SE, Suite 1900, Atlanta, GA 30339 (a shared-office tower, per an aggregator's read of the site)
more about this seller
Phone (470) 263-0568.
Another site uses this name
The real store is erospeptides.com. erospeptidesusa.com is separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
EZ Peptides
ezpeptides.com ↗
15% under
vs median
Price position
Sep 18, 2026Oct 24, 2026
24% below market on Sep 18, 2026, 15% below on Oct 24, 2026.
41
compounds
96%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik
where this comes from
Per outside reviews
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Card (charges appear on statements as EZPeptides.com, per an outside review); guest checkout allowed
No coupon
8 outside tests on Finnrick ↗
WHO RUNS IT
EZ Peptides LLC
more about this seller
5203 Juan Tabo Blvd NE, STE 2B, Albuquerque, NM 87111. Phone +1 (317) 527-6497.
Another site uses this name
The real store is ezpeptides.com. ezpeptidesofficial.com is a separate site.
See its prices →Visit site ↗
Checked Oct 24, 2026
Fit Formulas
fitformulas.com ↗
42% under
vs median
Price position
Oct 19, 2026Oct 24, 2026
42% below market on Oct 19, 2026, 42% below on Oct 24, 2026.
41
compounds
89%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Says every formula has a COA online.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Forto Labs
fortolabs.co ↗
2% over
vs median
Price position
Sep 12, 2026Oct 24, 2026
49% above market on Sep 12, 2026, 2% above on Oct 24, 2026.
71
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout; guest checkout allowed
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Sep 12, 2026
Full Scale Peptides
fullscalepeptides.com ↗
3% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
11% below market on Aug 26, 2026, 3% above on Oct 24, 2026.
21
compounds
89%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named on the store's own summary page
LOT MATCH
Batch-specific COAs published before purchase.
TESTED FOR
Purity, identity, consistency (stated).
Not named; the privacy policy mentions linked external payment pages
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Full Scale Peptides LLC (Florida LLC; registered address on file with the Florida Division of Corporations)
See its prices →Visit site ↗
Checked Oct 24, 2026
Fusion Peptides
fusionpeptide.com ↗
43% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
26% above market on Aug 26, 2026, 43% below on Oct 24, 2026.
64
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent third-party verification
LOT MATCH
COA page listing all reports by product, with batch numbers.
where this comes from
Also on each product page
TESTED FOR
Identity by HPLC-MS, purity by HPLC.
Several processors offered at checkout (the store says standard card processors often refuse research products); methods not listed
No coupon
No Finnrick test results
WHO RUNS IT
Glendale, AZ (no street address)
Another store has a similar name
PureFusion Peptides at purefusionpeptide.com is a different business, not a copy of this one.
See its prices →Visit site ↗
Checked Oct 24, 2026
Genetic Peptides
geneticpeptide.com ↗
Partner
50% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
46% above market on Aug 26, 2026, 50% above on Oct 24, 2026.
19
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not published; the terms use standard template language about card details and the footer payment image could not be read
Couponpeptidedecoding
No Finnrick test results
WHO RUNS IT
Dallas, Texas 75228 (no street address given)
more about this seller
Phone 469-619-8611.
Another store has a similar name
geneticpeptidesusa.com is a different business, not a copy of this one.
See its prices →Visit site ↗
Checked Oct 17, 2026
Genoscience
genoscience.net ↗
Partner
2% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
At the market median on Sep 28, 2026, 2% above on Oct 24, 2026.
26
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik (its tirzepatide page cites a Janoshik COA)
where this comes from
Says HPLC and MS per batch, COA on request
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Credit cards (its home page); subscriptions with a stored payment method
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Sarasota, FL (no street address; orders@genoscience.net and a proton.me support address)
See its prices →Visit site ↗
Checked Oct 24, 2026
Gentleman Peptides
gentlemanpeptides.com ↗
2% under
vs median
Price position
Sep 18, 2026Oct 24, 2026
56% below market on Sep 18, 2026, 2% below on Oct 24, 2026.
31
compounds
74%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Certificates behind account login.
TESTED FOR
The store does not say.
Not listed; one Trustpilot reviewer says the store insisted on bitcoin, Apple Pay or Chime
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 17, 2026
GenX Bio
genx.bio ↗
1% under
vs median
Price position
Oct 21, 2026Oct 24, 2026
1% below market on Oct 21, 2026, 1% below on Oct 24, 2026.
44
compounds
92%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
None named on its home, product or questions pages.
LOT MATCH
Certificates appear on product pages as images.
where this comes from
No lot number, laboratory or test date appears as text, and there is no certificate index.
TESTED FOR
The store does not say.
where this comes from
Its page description tags mention HPLC and mass spectrometry; the page text names no method.
Credit cards (its FAQ covers card declines); other methods not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
GENX Peptides (its age gate says "Powered by Sterling Path LLC")
more about this seller
1415 N Loop W, Houston, TX 77008; contact@genx.bio. Around since 2013.
See its prices →Visit site ↗
Checked Oct 21, 2026
Geo Peptides
geopeptides.com ↗
13% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
16% below market on Aug 26, 2026, 13% below on Oct 24, 2026.
29
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Visa, Mastercard, Discover, American Express; also Green Dot MoneyPak (a prepaid cash voucher). Buyers paying by anything other than card must sign and return a form before shipping
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
4905 34th St S, Ste 255, Saint Petersburg, FL 33711 (business directory listing)
more about this seller
Phone (727) 537-0844 (the store calls this its only official number). the .net home page publishes a shared default login password for migrated accounts.
See its prices →Visit site ↗
Checked Oct 24, 2026
Glow Peptides
glowpeptides.com ↗
Not enough comparable listings
vs median
1
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Yes: a lot COA, with a COA verification page.
TESTED FOR
Purity by HPLC per component (stated).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Glow Peptides LLC
more about this seller
2831 Exchange Ct, Ste C, West Palm Beach, FL 33409. Phone +1 728-215-6557.
See its prices →Visit site ↗
Checked Oct 24, 2026
Go Alpha Labs Peptides
goalphalabs.com ↗
32% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
28% below market on Aug 26, 2026, 32% below on Oct 24, 2026.
57
compounds
95%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
US debit/credit card, e-check, online wallets where applicable
No coupon
8 outside tests on Finnrick ↗
WHO RUNS IT
10242 NW 47th St Suite #1, Sunrise, FL 33351
more about this seller
Phone 866-378-9587.
Another site uses this name
The real store is goalphalabs.com. alphalabspeptide.com is a separate look-alike.
See its prices →Visit site ↗
Checked Oct 24, 2026
Greatest Peptides
greatestpeptides.com ↗
9% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
14% below market on Sep 28, 2026, 9% below on Oct 24, 2026.
23
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics (named in its footer)
where this comes from
HPLC and LC-MS on every lot, endotoxin screened, batch-specific COA
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Visa, Mastercard, Amex, Discover, JCB (product page and footer)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Greatest Peptides LLC
more about this seller
1100 Town and Country Rd, Ste 1250, Orange, CA 92868. Phone 812-PEPTIDE.
See its prices →Visit site ↗
Checked Oct 24, 2026
Guru Peptides
gurupeptides.com ↗
13% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
15% below market on Aug 26, 2026, 13% below on Oct 24, 2026.
43
compounds
89%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
West Palm Beach, FL 33403
more about this seller
Phone 561-510-6897 (text). Around since 2017 (per the store footer).
See its prices →Visit site ↗
Checked Oct 24, 2026
Helion Research
helionresearchusa.com ↗
Partner
14% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
13% below market on Oct 20, 2026, 14% below on Oct 24, 2026.
9
compounds
100%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
ILS Laboratories
LOT MATCH
Says lot-specific COAs post as each lot clears testing.
where this comes from
Its COA portal shows 5 published reports (GHK-Cu, CJC + Ipamorelin, bacteriostatic water, Reta 10mg and 20mg), no lot numbers shown
TESTED FOR
Identity and purity by HPLC and mass spec, endotoxin (LAL), plus a fentanyl screen on each lot (stated).
Visa, Mastercard, American Express, Discover; Venmo, Cash App and Chime after ordering; Zelle and crypto (BTC, ETH, USDC) when available, 5% off
CouponPEPDECODE saves 20%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Helion Research (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 24, 2026
Hero Peptides
heropeptides.com ↗
6% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
4% below market on Aug 26, 2026, 6% below on Oct 24, 2026.
39
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not listed ('secure checkout')
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
Three other Hero-named sites exist
heropeptideslab.com, heroicpeptides.com and herolabspeptides.com all use the name. None is confirmed as the same seller, and one still shows unfinished template testimonials.
See its prices →Visit site ↗
Checked Oct 24, 2026
Ignite Peptides
ignitepeptides.com ↗
Partner
5% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
7% below market on Aug 26, 2026, 5% above on Oct 24, 2026.
25
compounds
82%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Kovera Labs
where this comes from
Named on its product images
LOT MATCH
No public library.
where this comes from
COAs by email request
TESTED FOR
The store does not say.
Card plus 'multiple secure payment options' (not enumerated); the privacy policy says card details are not stored, and orders carry a Payment Pending status, which points to at least one manual method
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Ignite Research LLC (per an outside review; BBB profile exists)
more about this seller
202 N Cedar Ave STE 1, Owatonna, MN 55060. Phone (612) 524-8750. Around since 2022 (per the store).
See its prices →Visit site ↗
Checked Oct 17, 2026
Improved Peptides
improvedpeptides.com ↗
37% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
26% above market on Sep 28, 2026, 37% above on Oct 24, 2026.
23
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Third-party HPLC per batch, COA Library; claims LC-MS, endotoxin and bioburden testing
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Visa, Mastercard, PayPal, Venmo, Zelle (its FAQ)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
The Improved Company LLC
more about this seller
Around since 2026 (site launched March 2026).
See its prices →Visit site ↗
Checked Oct 17, 2026
Instant Peptides
instantpeptides.com ↗
15% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
22% below market on Aug 26, 2026, 15% below on Oct 24, 2026.
45
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Kovera Labs, Freedom Diagnostics
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
card
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Instant Peptides LLC, 2780 E Fowler Ave #306, Tampa, FL 33612
more about this seller
Phone (954) 204-8265 (WhatsApp).
See its prices →Visit site ↗
Checked Sep 28, 2026
Iron Peak Peptides
ironpeakpeptides.com ↗
9% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
4% above market on Sep 28, 2026, 9% above on Oct 24, 2026.
67
compounds
89%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Bank transfer (Link Money), ACH, Zelle
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 10, 2026
Kits4Less
kits4less.is ↗
43% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
43% below market on Aug 26, 2026, 43% below on Oct 24, 2026.
9
compounds
96%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Crypto (the store links a how-to-buy-Bitcoin guide)
No coupon
No warning letter, no copied name
7 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 17, 2026
Kitsune Compounds
kitsunecompounds.net ↗
40% under
vs median
Price position
Sep 5, 2026Oct 24, 2026
47% below market on Sep 5, 2026, 40% below on Oct 24, 2026.
13
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Crypto (USDT and BTC) with a 20% discount; other methods not listed. The Shopify sister site's privacy policy covers card data
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
LA Peptides
lapeptides.net ↗
2% over
vs median
Price position
Oct 20, 2026Oct 24, 2026
4% above market on Oct 20, 2026, 2% above on Oct 24, 2026.
50
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent third-party testing ("six-panel testing")
LOT MATCH
Says a third-party COA on every batch, matched by the lot number on the vial and opened by a QR code on the label; its COA portal gives two counts (77 and 50 products with COAs).
TESTED FOR
Six-panel testing (stated).
where this comes from
The panel is not listed.
Not stated before checkout; its terms mention payment by app or crypto transfer
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
LA Peptides (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 24, 2026
Landro Labs
landrolabs.com ↗
Partner
52% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
42% above market on Oct 19, 2026, 52% above on Oct 24, 2026.
30
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says an independent third-party COA per lot (HPLC and MS identity, quantitation, bioburden), emailed on request with an order number
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
Couponpeptidedecoding saves 10%
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
APAKFITNESS LLC (named in its footer)
more about this seller
2200 North Commerce Parkway, Suite 200, Weston, FL 33326. site from April 2026.
See its prices →Visit site ↗
Checked Oct 24, 2026
Liberty Peptides
libertypeptides.com ↗
7% under
vs median
Price position
Sep 1, 2026Oct 24, 2026
15% below market on Sep 1, 2026, 7% below on Oct 24, 2026.
63
compounds
98%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent third-party labs
LOT MATCH
COAs available for every product (stated).
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
19 outside tests on Finnrick ↗
WHO RUNS IT
None on the site; domain WHOIS lists PO Box 1769, Denver, CO 80201
more about this seller
Phone (877) 871-2284 (voicemail).
Two other sites use this name
The real store is libertypeptides.com. libertypeptidesco.com and libertypeptides.store both claim US manufacturing.
See its prices →Visit site ↗
Checked Oct 24, 2026
Limitless Life Nootropics
limitlesslifenootropics.com ↗
Partner
Not enough comparable listings
vs median
Price position
Sep 1, 2026Sep 18, 2026
78% above market on Sep 1, 2026, 78% above on Sep 18, 2026.
49
compounds
90%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Says COAs for every batch.
TESTED FOR
Purity, identity, contaminant screen.
American Express, Discover, Mastercard, Visa (footer); Revolut transfer to a named individual (Chris Mercer) per the How to Pay page; international wire instructions page; outside reviews and Trustpilot add ACH (5 percent off), crypto (10 percent off), CashApp (5 percent off) and Zelle. A BBB complaint describes Cash App payments taken under a personal name
No coupon
No warning letter, no copied name
22 outside tests on Finnrick ↗
WHO RUNS IT
Limitless Biotech (the .com site now carries this name; support email help@limitlessbiotech.com)
more about this seller
Pensacola, FL (footer; BBB profile is filed under Gulf Breeze, FL). Phone 866-533-5017. The .com site itself now brands as Limitless Biotech on BigCommerce, so the .st 'new home' question is settled by the rename.
See its prices →Visit site ↗
Checked Oct 10, 2026
LiveWell Peptides
shoplivewellpeptides.com ↗
Partner
32% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
33% above market on Sep 28, 2026, 32% above on Oct 24, 2026.
35
compounds
95%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
MZ Biolabs and Janoshik Analytical
where this comes from
Named per row in its results table: MZ Biolabs on 10 batches, Janoshik on 5.
LOT MATCH
No: a results table with batch numbers, purity values, test dates and lab names, but no certificate documents.
TESTED FOR
Purity by HPLC and identity by mass spectrometry (stated).
where this comes from
The table shows no document, so neither method is recorded as shown. The page says batch release testing is moving to an accredited third-party laboratory.
Visa, Zelle, cash-style and card icons in the footer; a bundle page asks buyers to confirm payment by phone or email
No coupon
No Finnrick test results
WHO RUNS IT
1910 Pacific Ave #9350, Dallas, TX 75201 (a numbered mailbox suite)
more about this seller
Phone +1 (469) 924-4959.
Its manufacturing address is a mailbox
The store says it makes every product in its own cGMP facility at 1910 Pacific Avenue. The address it gives is mailbox suite 9350 at that street, which does not fit a manufacturing plant. Treat the claim as unverified.
See its prices →Visit site ↗
Checked Oct 24, 2026
LIVV Natural
livvnatural.com ↗
304% over
vs median
Price position
Oct 11, 2026Oct 24, 2026
366% above market on Oct 11, 2026, 304% above on Oct 24, 2026.
34
compounds
64%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
800 W Ivy St, Ste A, San Diego, CA 92101
more about this seller
Phone (619) 840-6700. Around since 2016 (clinic founded by Dr. Jason Phan, NMD).
See its prices →Visit site ↗
Checked Oct 24, 2026
Lone Star Peptide Co
lonestarpeptideco.com ↗
Not enough comparable listings
vs median
3
compounds
100%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store says local labs in College Station, Texas.
LOT MATCH
Yes: a batch page per lot with a certificate PDF; five batches shown.
TESTED FOR
Purity by HPLC and identity by MALDI-MS, as its batch records state.
where this comes from
The method wording is the store's batch record; the certificate PDFs are images and name no laboratory on the batch page.
Invoice-based ordering (home page); methods not listed
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Lone Star Peptide Co. LLC
more about this seller
1334 Brittmoore Rd, Houston, TX 77043. Phone (832) 408-9929. Around since 2025.
See its prices →Visit site ↗
Checked Sep 28, 2026
Lumi Peptides
lumipeptides.com ↗
18% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
18% below market on Oct 20, 2026, 18% below on Oct 24, 2026.
29
compounds
95%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The whole site, including its certificate page, opens only to registered accounts.
LOT MATCH
No: nothing is shown to visitors.
TESTED FOR
Nothing shown to visitors.
where this comes from
The site opens only to registered accounts, so there is nothing a visitor can check.
Not visible without a login
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 20, 2026
Luxe Peptides
luxepeptides.is ↗
1% under
vs median
Price position
Oct 19, 2026Oct 24, 2026
2% below market on Oct 19, 2026, 1% below on Oct 24, 2026.
77
compounds
87%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
LOT MATCH
Published COAs page.
where this comes from
Lot-specific COA per product
TESTED FOR
Identity and purity by HPLC-UV with mass spectrometry (stated).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 17, 2026
Main Peptides
mainpeptides.com ↗
Partner
Not enough comparable listings
vs median
10
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Site not loading.
LOT MATCH
No: site not loading.
TESTED FOR
Nothing to check.
where this comes from
The site has returned a connection error on every date it was opened in October 2026.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found; contact page lists service@mainpeptides.com only
Site not loading: connection errors on 4, 10 and 25 October 2026
See its prices →Visit site ↗
Checked Sep 12, 2026
Midwest Peptide
midwestpeptide.com ↗
Partner
Not enough comparable listings
vs median
8
compounds
75%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says accredited US labs test each batch "7x"; COA page
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC, as the store describes it.
Zelle (home page); other methods not listed
CouponPEPTIDEDECODING
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Mission, KS (no street address)
more about this seller
Phone 636-734-2390 (a St. Louis-area code).
See its prices →Visit site ↗
Checked Oct 24, 2026
Modern Research
modernresearchpeptides.net ↗
33% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
33% below market on Oct 20, 2026, 33% below on Oct 24, 2026.
53
compounds
98%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Every COA link on its COA page opens coas.freedomdiagnosticstesting.com
LOT MATCH
About 150 public COA links across about 70 products, each with an ID; the page does not say per batch or lot and gives no dates.
where this comes from
Product names carry the tested amount, e.g. "Tesamorelin 20mg (19.17mg)"
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Modern Research Peptides (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 24, 2026
Nextech Labs
nextechlaboratories.com ↗
2% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
4% below market on Aug 26, 2026, 2% above on Oct 24, 2026.
40
compounds
99%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
One line claiming independent lab testing confirms identity and quality, with no laboratory, no method and no testing page.
Not listed ('secure checkout'); a Trustpilot reviewer calls checkout easy
No coupon
No warning letter, no copied name
31 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
NuScience Peptides
nusciencepeptides.com ↗
6% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
1% above market on Aug 26, 2026, 6% above on Oct 24, 2026.
54
compounds
99%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside review: Freedom Diagnostics, MZ Biolabs
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC, as the store describes it.
Not listed ('standard payment methods through encrypted checkout'); checkout sits behind an account wall. A 2023 outside review said PayPal
No coupon
49 outside tests on Finnrick ↗
WHO RUNS IT
Albuquerque, NM (store says 'registered US-based company operating from Albuquerque'; no street address)
Other sites use this name
The real store is nusciencepeptides.com. Look-alike domains including nuscience-peptide.com exist.
FDA warning letter, August 24 2026
The letter cites its GLP products, survodutide, mazdutide, PT-141, tesamorelin products and its bacteriostatic water. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 24, 2026
Offline Peptides
offlinepeptides.com ↗
Partner
36% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
39% below market on Sep 28, 2026, 36% below on Oct 24, 2026.
43
compounds
93%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Independent US labs; COA page with a photo of the tested vial per batch
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
ACH/e-check, Visa, Mastercard, Amex, Discover, Zelle and Cash App (5% off for Zelle or Cash App)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
539 W. Commerce St #8263, Dallas, TX 75208 (a numbered mailbox)
more about this seller
Phone 1-888-260-3660. site built February 2026.
See its prices →Visit site ↗
Checked Oct 10, 2026
Olympus Labs
theolympuslabs.com ↗
Not enough comparable listings
vs median
Price position
Sep 5, 2026Oct 10, 2026
8% below market on Sep 5, 2026, at the market median on Oct 10, 2026.
5
compounds
75%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
eCheck / eDebit only; no credit or debit cards or other methods
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Oneday Compounds
onedaycompounds.com ↗
46% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
44% below market on Oct 20, 2026, 46% below on Oct 24, 2026.
39
compounds
98%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says every lot is tested by a U.S. ISO/IEC 17025:2017 accredited laboratory before release
LOT MATCH
Says COAs are published for every product and every lot.
where this comes from
Its COA page needs a login
TESTED FOR
Identity (HPLC), net content, purity (HPLC), conformity, sterility, endotoxins (LAL) and heavy metals (ICP-MS) (stated).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Oneday Enterprises, LLC, doing business as Oneday Compounds
more about this seller
2326 Washington Blvd, Fourth Floor, Ogden, UT 84401; hello@onedaycompounds.com. Phone (801) 332-9742.
See its prices →Visit site ↗
Checked Oct 24, 2026
OP Peptides
oppeptides.net ↗
16% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
23% below market on Aug 26, 2026, 16% below on Oct 24, 2026.
20
compounds
93%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not listed on the public pages
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
Two other stores have similar names
optpeptides.com and peptidesoptimized.com are different businesses, not copies of this one.
See its prices →Visit site ↗
Checked Sep 28, 2026
Orion Peptides
orionpeptide.com ↗
21% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
7% above market on Aug 26, 2026, 21% above on Oct 24, 2026.
39
compounds
72%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated on orionpeptide.com. The FAQ at orionpeptides.com (plural) lists Apple Pay, Google Pay, Link, Amazon Pay, ACH/e-check and most major credit cards, but that site may be a different seller (a third, orionpeptides.org, also exists)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
The contact page shows '123 Research Blvd, Suite 100, Science Park, FL 33431', which is a template placeholder (no such place; 33431 is Boca Raton)
more about this seller
Phone 601-790-0367.
See its prices →Visit site ↗
Checked Oct 24, 2026
Oupeptide
oupeptide.com ↗
81% over
vs median
Price position
Aug 27, 2026Oct 24, 2026
82% above market on Aug 27, 2026, 81% above on Oct 24, 2026.
4
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says its own analytical lab runs HPLC and mass spec
LOT MATCH
The store does not say.
TESTED FOR
Purity and identity, in-house.
Negotiated by email or WhatsApp after a quote; the buyer pays before shipment. No checkout payment list
No coupon
No warning letter, no copied name
190 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
more about this seller
Presents as a manufacturer rather than a US retailer: ordering is by emailed inquiry, quotation and negotiated price, the pattern of overseas bulk suppliers..
See its prices →Visit site ↗
Checked Oct 17, 2026
Paramount Peptides
paramountpeptides.com ↗
26% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
13% above market on Aug 26, 2026, 26% above on Oct 24, 2026.
56
compounds
100%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside reviews: Janoshik
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
The store does not say.
Shown only at checkout
No coupon
No warning letter, no copied name
65 outside tests on Finnrick ↗
WHO RUNS IT
200 Spectrum Center Dr., Irvine, CA 92618
more about this seller
Phone 888-814-8143.
See its prices →Visit site ↗
Checked Oct 24, 2026
Pepsynth Labs
pepsynthlabs.com ↗
53% over
vs median
Price position
Oct 1, 2026Oct 24, 2026
50% above market on Oct 1, 2026, 53% above on Oct 24, 2026.
27
compounds
94%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Pepsynth
more about this seller
Phone +1 707 969-0777.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peptide Pro
peptidepro.io ↗
Partner
Not enough comparable listings
vs median
2
compounds
0%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not published (store is behind a login). Trustpilot reviewers mention paying by Zelle and being redirected to a different form of payment after bank declines, which points to card or ACH plus Zelle
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Franklin, TN (not shown on the store, which requires a login)
more about this seller
Around since selling since at least December 2024.
Catalogue requires an account
See its prices →Visit site ↗
Checked —
Peptide Pros
peptidepros.net ↗
13% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
6% above market on Aug 26, 2026, 13% above on Oct 24, 2026.
45
compounds
98%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Lot-numbered COAs in a central 'COA Reports' archive (not on each product page).
TESTED FOR
HPLC and MS results (stated).
Checking account (e-check) through its payment gateway, bitcoin, mailed check, money order, cashier's check, bank wire. No card seen; a 2024 outside review says a different company name appears on bank statements
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
1602 Alton Rd #371, Miami Beach, FL 33139 (a numbered unit, likely a mailbox)
more about this seller
Phone 1-888-995-1591. Around since 2013 (per its business listing). peptidepros.com redirects to peptidepros.net.
See its prices →Visit site ↗
Checked Oct 24, 2026
Peptide Warehouse
peptide-warehouse.com ↗
4% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
15% above market on Aug 26, 2026, 4% above on Oct 24, 2026.
74
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named as a US analytical laboratory testing selected products
LOT MATCH
COAs available.
TESTED FOR
Identity and purity by HPLC and mass spec (stated).
Card through an encrypted gateway on its own domain (no redirect); also Zelle, Wise, crypto and invoice. The store warns that invoices only ever come from peptide-warehouse.com addresses
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
PeptiLab Research
peptilabresearch.com ↗
Not enough comparable listings
vs median
2
compounds
0%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says third-party testing
LOT MATCH
The store does not say.
TESTED FOR
Purity; claims LPS- and heavy-metal-free (stated).
Not listed; a site scan flags gift-card payment
No coupon
No warning letter, no copied name
15 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
more about this seller
Claims US manufacture in 'WHO/GMP and ISO 9001:2008' facilities and domestic shipping from the US, Europe and Australia, the same wording Peptide Gurus (China phone number) uses.
See its prices →Visit site ↗
Checked Aug 24, 2026
Pinnacle Peptides
pinnaclepeptides.com ↗
29% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
22% above market on Sep 28, 2026, 29% above on Oct 24, 2026.
19
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Says it provides free HPLC and MS results with most orders.
TESTED FOR
Purity (HPLC), mass (MS).
Major credit cards and crypto (per a coupon-site summary, Sep 2026); not confirmed on the store's own pages
No coupon
No Finnrick test results
WHO RUNS IT
Mailing address: Tower Financial Center, Floor 9, 50th Street, Marbella, Panama City, Panama
FDA warning letter, December 12 2025
Letter 719337 went to Pinnacle Professional Research, trading as Pinnacle Peptides, in Greensboro, NC. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 24, 2026
Planet Peptide
planetpeptide.com ↗
10% under
vs median
Price position
Oct 21, 2026Oct 24, 2026
4% below market on Oct 21, 2026, 10% below on Oct 24, 2026.
32
compounds
71%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The site opens only behind a login and a researcher attestation.
LOT MATCH
No: nothing is shown to visitors.
TESTED FOR
Nothing shown to visitors.
where this comes from
The site opens only to registered accounts, so there is nothing a visitor can check.
Not stated before checkout
No coupon
No warning letter, no copied name
62 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 21, 2026
Precision Peptide Co
precisionresearchlabs.com ↗
10% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
At the market median on Sep 28, 2026, 10% above on Oct 24, 2026.
36
compounds
96%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
more about this seller
precisionpeptideco.com redirects to precisionresearchlabs.com, which requires a login (product codes PRL-1 SM, PRL-2 TRZ, PRL-3 RT match the Precision Research Labs brand).
See its prices →Visit site ↗
Checked Oct 24, 2026
Prime Sciences
prime-sciences.com ↗
65% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
3% above market on Aug 26, 2026, 65% above on Oct 24, 2026.
36
compounds
86%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not named; checkout redirects to an off-site payment page ('We are redirecting you to complete your order... wait for order confirmation page after making a payment')
No coupon
No Finnrick test results
WHO RUNS IT
No company name or address published.
more about this seller
Phone 1 (888) 737-8133.
FDA warning letter, March 31 2026
Letter 721805 was issued against the hyphenated domain prime-sciences.com. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Sep 28, 2026
Protide Health
protidehealth.com ↗
37% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
18% above market on Aug 26, 2026, 37% above on Oct 24, 2026.
47
compounds
94%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says third-party testing and publishes independent certificates. Freedom Diagnostics, per outside reviews
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
Purity by HPLC and identity by mass spectrometry, as the store describes it.
Not named ('secure payment processing'); a researcher account is required to browse and buy
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
Two other sites use this name
The real store is protidehealth.com, which says it sells nowhere else. protidehealthofficial.com and officialprotidehealth.com are separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
PRPEPS
prpeps.com ↗
Partner
22% under
vs median
Price position
Oct 10, 2026Oct 24, 2026
26% below market on Oct 10, 2026, 22% below on Oct 24, 2026.
41
compounds
100%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says a third-party accredited laboratory tests every lot
LOT MATCH
Yes: a batch-level COA for every lot, searchable by product or batch number in its COA library (prpeps.com/coa).
TESTED FOR
HPLC purity (99% minimum), identity by mass spectrometry, appearance, water content and residual solvents where applicable (stated).
Visa, Mastercard, American Express and Discover (through BarterPay); Cash App and Venmo
Couponpeptidedecoding
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Premier Research LLC
See its prices →Visit site ↗
Checked Oct 24, 2026
Pura Peptides
purapeptides.com ↗
9% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
At the market median on Aug 26, 2026, 9% above on Oct 24, 2026.
39
compounds
86%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store says third-party tested for identity, purity and concentration.
LOT MATCH
No: no certificate is published; product pages open to registered accounts only.
TESTED FOR
Identity, purity and concentration (stated).
where this comes from
No method or laboratory is shown.
Not named. The site banner warned of 'limited payment methods available until next week' (Feb 2026); refund policy deducts a 10% fee for payment-processor charges
No coupon
21 outside tests on Finnrick ↗
WHO RUNS IT
No company name or address published.
more about this seller
Phone +1 (786) 788-6679 (Miami-area code).
Two other stores have similar names
Pur Peptides at purpeptide.com and Puratek Peptides at puratekpeptides.com are different businesses, not copies of this one.
See its prices →Visit site ↗
Checked Oct 24, 2026
Puratek Peptides
puratekpeptides.com ↗
29% under
vs median
Price position
Oct 1, 2026Oct 24, 2026
33% below market on Oct 1, 2026, 29% below on Oct 24, 2026.
33
compounds
92%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Yes: a batch-specific COA image on each product page.
TESTED FOR
Purity by HPLC and identity by mass spectrometry (stated).
Not stated before checkout
No coupon
No Finnrick test results
WHO RUNS IT
Puratek LLC
more about this seller
Nevada, USA (no street address on the site). Phone 702-518-4855.
Two other sites use this name
The real store is puratekpeptides.com, which its own X profile links. puratek-peptides.com and puratekpeptide.com are separate.
See its prices →Visit site ↗
Checked Oct 24, 2026
Pure Compounding Labs
purecompoundinglabs.com ↗
9% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
9% below market on Oct 20, 2026, 9% below on Oct 24, 2026.
11
compounds
91%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says every batch is verified by third-party labs
LOT MATCH
Says lot-specific COAs.
where this comes from
Its COA page shows the same lot "LOT-2026-332" on files for eight different products, GLP files with no lot, and some "Download PDF" links that open images
TESTED FOR
Purity by HPLC and identity by mass spectrometry (stated).
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Pure Compounding Labs (legal entity not stated)
more about this seller
279 Hwy 57 S., Little River, SC; support@purecompoundinglabs.com. Phone 843.492.5283.
See its prices →Visit site ↗
Checked Oct 20, 2026
Pure Tested Peptides
puretestedpeptides.com ↗
39% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
31% above market on Aug 26, 2026, 39% above on Oct 24, 2026.
36
compounds
100%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
A library of 13 certificates, each with a view or download link, most carrying a lot identifier such as LOT 20250915.
TESTED FOR
Claims comprehensive third-party testing and 99% or better purity.
where this comes from
No analytical method is named anywhere on the store
Credit, debit, Plaid ACH, crypto, CashApp, Venmo 'and more'
No coupon
No warning letter, no copied name
7 outside tests on Finnrick ↗
WHO RUNS IT
No company name or address published.
more about this seller
Phone 727-513-9780 (call or text; Tampa Bay-area code).
See its prices →Visit site ↗
Checked Oct 24, 2026
Recon Peptides
reconpeptides.com ↗
6% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
2% above market on Aug 26, 2026, 6% above on Oct 24, 2026.
57
compounds
97%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
No card. Older reviews list Zelle, bank transfer, crypto and cash deposit at a Bank of America branch (2021); bitcoin, Ethereum or an emailed invoice (2024)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Gulf Breeze, FL (BBB profile; no street address on the site)
See its prices →Visit site ↗
Checked Oct 24, 2026
RegenX Labs
regenyxlabs.net ↗
24% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
27% below market on Aug 26, 2026, 24% below on Oct 24, 2026.
23
compounds
96%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Oct 24, 2026
Research Ready Peptides
researchreadypeptides.com ↗
15% over
vs median
Price position
Sep 28, 2026Oct 24, 2026
10% above market on Sep 28, 2026, 15% above on Oct 24, 2026.
20
compounds
88%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says certificates of analysis are provided
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
PO Box 512, Gaston, IN 47342
more about this seller
Phone 765-748-7473 (text/SMS only). Around since copyright 2024; site rebuilt May 2026 (new accounts required).
See its prices →Visit site ↗
Checked Oct 24, 2026
Researchem
researchemllc.com ↗
12% under
vs median
Price position
Sep 27, 2026Oct 24, 2026
22% below market on Sep 27, 2026, 12% below on Oct 24, 2026.
51
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent third-party labs
LOT MATCH
COAs with each product (stated).
TESTED FOR
Purity; claims 96%+ (lower than the usual 99% claim).
Bitcoin only (the store says so; wallet shown after the order is placed)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Reta One Labs
retaonelabs.com ↗
48% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
47% below market on Oct 20, 2026, 48% below on Oct 24, 2026.
25
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The public page says third-party tested.
LOT MATCH
No: the test results page opens to registered accounts only.
TESTED FOR
Purity (stated).
where this comes from
Products, pricing and test results open to registered accounts only; the public page shows the claim and nothing to check.
Visa, Discover, Zelle, bank transfer and crypto (footer logos)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Reta One Labs (legal entity not stated)
more about this seller
9818 Fry Rd STE #150, Cypress, TX 77433; support@retaonelabs.com. Phone 866-932-0050.
See its prices →Visit site ↗
Checked Oct 20, 2026
Revolution Research
revolutionresearch.shop ↗
3% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
9% below market on Sep 28, 2026, 3% below on Oct 24, 2026.
42
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Sep 28, 2026
Riptide Wellness Labs
riptidewellnesslabs.com ↗
58% over
vs median
Price position
Oct 20, 2026Oct 24, 2026
62% above market on Oct 20, 2026, 58% above on Oct 24, 2026.
14
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store says every batch is independently tested.
LOT MATCH
No: its certificates page lists test categories and says to request documentation by email.
TESTED FOR
Identity and purity (stated).
where this comes from
No certificate, method or laboratory is shown.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Rivn Peptides
rivnresearch.com ↗
6% under
vs median
Price position
Sep 28, 2026Oct 24, 2026
14% below market on Sep 28, 2026, 6% below on Oct 24, 2026.
33
compounds
98%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Freedom Diagnostics
where this comes from
Named on its home page: each batch tested in Nashville, TN by Freedom Diagnostics
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
710 Nashville Pike Ste 104, Gallatin, TN 37066
more about this seller
Phone 615-866-6338. Moved from rivnpeptides.com to rivnresearch.com (seen 2026-09-28).
See its prices →Visit site ↗
Checked Oct 24, 2026
Royal Peptides
royal-peptides.com ↗
Partner
At the median
vs median
Price position
Sep 12, 2026Oct 24, 2026
11% above market on Sep 12, 2026, at the market median on Oct 24, 2026.
51
compounds
93%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Janoshik
LOT MATCH
Its certificate archive returns no records for any compound, strength or batch identifier, so none is currently viewable.
where this comes from
The home page carries a Janoshik Verified badge
TESTED FOR
Purity.
where this comes from
Its FAQ says verification may include approaches such as HPLC and mass spectrometry, depending on the batch and the documentation available
Bank transfer, crypto and other options shown at checkout (current terms); the footer links a CashApp guide. The February 2025 terms listed Zelle, Chime, Wise, crypto and PayPal Friends & Family (B2B only) and said no credit cards; a reviewer reported getting a card payment link from support on request
No code required saves 10%
34 outside tests on Finnrick ↗
WHO RUNS IT
No company name or address published.
more about this seller
Phone Text 520-580-4100. Around since 2023 (per its About page).
Two other sites use this name
The real store is royal-peptides.com. royalpeptideslab.com and royalpeptidelabs.com are different businesses.
FDA warning letter, August 24 2026
The letter cites tirzepatide, semaglutide, retatrutide, SS-31, PT-141, tesamorelin and a tesamorelin blend as unapproved new drugs. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 24, 2026
Ruo Bio
ruo.bio ↗
26% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
26% below market on Oct 20, 2026, 26% below on Oct 24, 2026.
75
compounds
92%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says accredited, independent third-party laboratories (several COA files are named "Chromate")
LOT MATCH
Yes: public COA library listing current and previous lot codes per product; says every batch is verified.
where this comes from
Offers a refund of outside HPLC testing
TESTED FOR
Identity, content, purity, sterility, endotoxins and heavy metals (stated).
Visa, Mastercard, American Express, Discover, ACH or wire, Zelle and crypto (BTC, ETH, USDT) in its terms and discounts page; its registration page says same-day payment by bank transfer, Zelle or crypto only
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
RUO (legal entity not stated)
more about this seller
Phone 1-804-636-6879. Around since late 2025.
See its prices →Visit site ↗
Checked Oct 24, 2026
Sigma Compounds
sigmacompounds.com ↗
27% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
20% above market on Aug 26, 2026, 27% above on Oct 24, 2026.
36
compounds
91%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
Purity by HPLC, as the store describes it.
Not listed ('100% secure payment'); reviewers call payment easy but do not name methods
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Simple Peptide
simplepeptide.com ↗
4% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
At the market median on Aug 26, 2026, 4% above on Oct 24, 2026.
55
compounds
93%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
The store does not say.
Visa, MC, Amex
No coupon
No warning letter, no copied name
40 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Singular Biotech
singular.supplies ↗
20% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
At the market median on Aug 26, 2026, 20% above on Oct 24, 2026.
48
compounds
92%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
The order-confirmation page lists Zelle, Cash App, Western Union, direct bank transfer and crypto; the shipping policy says 'all major credit cards'. Both pages date to 2019. The newer singularbiotech.com site describes invoice and bank transfer for B2B accounts
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Los Angeles, CA 90068 (no street address)
more about this seller
Phone 323-990-8140.
See its prices →Visit site ↗
Checked Oct 24, 2026
SJ Peptides
sjpep.net ↗
10% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
12% above market on Aug 26, 2026, 10% below on Oct 24, 2026.
58
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
Says lab-tested, sourced from one lab it works with directly.
Credit/debit cards and CashApp (CashApp payments confirmed by hand within 24 hours); payment instructions arrive by email after the order
No coupon
No Finnrick test results
WHO RUNS IT
SJ Peptides LLC
more about this seller
PO Box 30779, Myrtle Beach, SC 29588 (a PO box). Moved from sjpeptides.net (its earlier site, which reported being temporarily closed) to sjpep.net.
Another site uses this name
The real store is sjpep.net, which it moved to from sjpeptides.net. sjpeps.net also uses the name.
See its prices →Visit site ↗
Checked Oct 24, 2026
Skye Peptides
skyepeptides.com ↗
12% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
At the market median on Aug 26, 2026, 12% above on Oct 24, 2026.
58
compounds
93%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not visible (catalog is membership-gated). A 2026 Trustpilot reviewer paid by Zelle; older aggregator summaries claiming cards and PayPal are not reliable
No coupon
82 outside tests on Finnrick ↗
WHO RUNS IT
Skye Research (trading as Skye Peptides)
more about this seller
11400 West Olympic Blvd, Los Angeles, CA 90064.
Three other sites use this name
The real store is skyepeptides.com. One buyer paid by Zelle at a copy and was then asked for a $100 insurance fee by a third party, the same pattern reported at a Core Peptides look-alike.
See its prices →Visit site ↗
Checked Oct 24, 2026
Solution Peptides
solutionpeptides.net ↗
At the median
vs median
Price position
Oct 20, 2026Oct 24, 2026
1% above market on Oct 20, 2026, at the market median on Oct 24, 2026.
81
compounds
96%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Its product data says each product includes or ships with a Certificate of Analysis.
where this comes from
No public COA page; per batch or lot not stated
TESTED FOR
The store does not say.
Visa and Mastercard ($990 limit per transaction), Venmo, Bitcoin and other crypto (5% off), ACH (payment page summary and terms)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Solution Peptides (legal entity not stated)
more about this seller
10299 Southern Blvd Suite 210294, Royal Palm Beach, FL 33421 (its terms call it the legal business address); support@solutionpeptides.net. Phone 833-662-3661.
See its prices →Visit site ↗
Checked Oct 24, 2026
Southern Aminos
southernaminos.com ↗
20% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
20% below market on Oct 20, 2026, 20% below on Oct 24, 2026.
52
compounds
81%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says products are tested by a U.S. third-party lab and that supplier identities are not disclosed
LOT MATCH
Says batch-specific documentation and 10-vial testing across each batch.
where this comes from
Its COA vault needs a login
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Southern Aminos LLC
more about this seller
41593 Winchester Road Suite 200, Temecula, CA 92590; cs@southernaminos.com.
See its prices →Visit site ↗
Checked Oct 24, 2026
Spartan BioLabs
spartanbiolab.com ↗
11% over
vs median
Price position
Oct 20, 2026Oct 24, 2026
11% above market on Oct 20, 2026, 11% above on Oct 24, 2026.
31
compounds
84%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent third-party lab testing ("a lab we do not own")
LOT MATCH
Yes: its COA page lists 8 lot reports with lot number, date and purity, searchable by the lot number on the vial; no lab named on any entry.
TESTED FOR
Identity and purity (stated).
Credit and debit cards (through Veyra), pay by bank (Link Money), Venmo and Zelle (terms)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Spartan BioLabs (entity type not stated)
more about this seller
30 N Gould St, Ste R, Sheridan, WY 82801 (mailing address in its terms); contact@spartanbiolab.com.
See its prices →Visit site ↗
Checked Oct 24, 2026
Sports Technology Labs
sportstechnologylabs.com ↗
25% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
36% above market on Aug 26, 2026, 25% above on Oct 24, 2026.
28
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
494 Bridgeport Avenue Suite 101-222, Shelton, CT 06484
more about this seller
Phone 959-333-0983.
See its prices →Visit site ↗
Checked Oct 24, 2026
Swiss Chems
swisschems.is ↗
1% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
10% below market on Aug 26, 2026, 1% below on Oct 24, 2026.
74
compounds
90%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
cards, bank, crypto
No coupon
10 outside tests on Finnrick ↗
WHO RUNS IT
No company name, address or phone published.
FDA warning letter, December 10 2024
Letter 695663 is on file at fda.gov. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 24, 2026
T Core Biotech
tcorebiotech.com ↗
10% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
8% below market on Oct 20, 2026, 10% below on Oct 24, 2026.
38
compounds
98%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Its terms offer a refund if testing at any HPLC licensed facility comes back negative
LOT MATCH
No COA statement on its public pages.
where this comes from
Its GLP options carry batch-style codes (for example "12mg - TCB260700")
TESTED FOR
The store does not say.
Major credit and debit cards, Zelle, CashApp and crypto (terms)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
TCore Biotech LLC
more about this seller
Arizona (no street address); info@tcorebiotech.com. Phone 1-877-282-6732.
See its prices →Visit site ↗
Checked Oct 24, 2026
True Peptide
true-peptides.com ↗
Partner
5% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
3% below market on Aug 26, 2026, 5% above on Oct 24, 2026.
21
compounds
63%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent US labs
LOT MATCH
Yes, searchable by lot.
where this comes from
The lot is printed on the vial
TESTED FOR
Purity, identity, quantity, sterility, residual solvents.
Visa, Mastercard, Apple Pay, Zelle, Bitcoin, USDT
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
True Research Labs
trueresearchlabs.com ↗
4% over
vs median
Price position
Oct 21, 2026Oct 24, 2026
3% above market on Oct 21, 2026, 4% above on Oct 24, 2026.
34
compounds
100%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent third-party verification.
LOT MATCH
The store does not say.
where this comes from
Its certificate page lists 21 products with purity and endotoxin headings and no figures, files, lot numbers or dates.
TESTED FOR
The store does not say.
where this comes from
Says every batch is tested for identity, consistency and quality; no method named.
Not stated before checkout (its footer shows a credit card image)
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
True Research Labs (legal entity not stated)
See its prices →Visit site ↗
Checked Oct 24, 2026
Unyx Peptides
unyxpeptides.com ↗
33% over
vs median
Price position
Oct 21, 2026Oct 24, 2026
32% above market on Oct 21, 2026, 33% above on Oct 24, 2026.
28
compounds
91%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
"Every batch tested by an independent third-party lab"
LOT MATCH
Yes: public COA library with 44 batch PDFs (batch IDs in the file names), dated Apr to Aug 2026.
TESTED FOR
HPLC purity (stated).
Credit and debit cards
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
UNYX Peptides LLC
more about this seller
2600 S Hardy Drive, Tempe, AZ 85282; support@unyxpeptides.com.
See its prices →Visit site ↗
Checked Oct 21, 2026
US Chem Labs
uschemlabs.com ↗
Not enough comparable listings
vs median
18
compounds
97%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store also sells its own testing services (HPLC, purity checks)
LOT MATCH
COA, HPLC and MS reports 'where available'.
TESTED FOR
Identity and purity (stated).
where this comes from
The store names no laboratory and publishes no certificate showing a method, so neither method is recorded as shown.
Not stated before checkout
No coupon
No Finnrick test results
WHO RUNS IT
None found; contact by web form
FDA warning letter, February 7 2024
Letter 669074, confirmed as a warning letter by the FDA roundup of February 13 2024. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
Its legal notice is unfinished
The notice still carries an unfilled placeholder reading '(Merchant Name) is not an outsourcing facility'. The store also says it is made and tested in the USA while describing global sourcing.
See its prices →Visit site ↗
Checked Oct 24, 2026
USA Peptide Sciences
usa-peptidesciences.com ↗
28% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
28% above market on Oct 19, 2026, 28% above on Oct 24, 2026.
94
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
COA information 'for applicable products'.
TESTED FOR
Purity by HPLC, as the store describes it.
Crypto encouraged with a 20% discount; other methods not named. Minimum order $100
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
None found
See its prices →Visit site ↗
Checked Oct 24, 2026
Vertex Labs
vertexpeptideslab.org ↗
Partner
26% over
vs median
Price position
Oct 10, 2026Oct 24, 2026
21% above market on Oct 10, 2026, 26% above on Oct 24, 2026.
29
compounds
100%
in stock
Testing
3 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Its COAs are published under the Vertex Labs name, and it says products are third-party tested
LOT MATCH
Yes: each published COA lists a lot number (COA page at vertexpeptideslab.org/coas).
TESTED FOR
Purity and identity (stated).
where this comes from
The test panel is not described.
Not stated before checkout
CouponPEPTIDEDECODING
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Vertex Labs
See its prices →Visit site ↗
Checked Oct 24, 2026
Vici Peptides
vicipeptides.com ↗
60% over
vs median
Price position
Oct 19, 2026Oct 24, 2026
45% above market on Oct 19, 2026, 60% above on Oct 24, 2026.
10
compounds
87%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Says independent ISO 17025 labs run a 6-point panel (identity, purity, potency, sterility, heavy metals, endotoxin) per batch, with FDA-registered API manufacturers
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
390 NE 191st St, STE 58434, Miami, FL 33179 (a numbered mailbox suite)
more about this seller
Phone 561-556-2659 and +1 (305) 404-3184. site built April 2026.
Part of the catalog requires an account
See its prices →Visit site ↗
Checked Oct 24, 2026
Voltera Sciences
volterasciences.com ↗
8% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
7% below market on Oct 20, 2026, 8% below on Oct 24, 2026.
27
compounds
100%
in stock
Testing
1 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The store says accredited American laboratories.
LOT MATCH
No: its COA library opens to registered accounts only; the public pages show no certificate.
TESTED FOR
Purity, identity and concentration by HPLC, endotoxin and sterility (stated).
where this comes from
Nothing a visitor can open shows a method or a laboratory.
Visa, Mastercard, American Express, Zelle and Venmo
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Voltera Sciences (legal entity not stated)
more about this seller
Phone (754) 335-5276.
See its prices →Visit site ↗
Checked Oct 24, 2026
Welli Labs
wellilabs.com ↗
33% under
vs median
Price position
Oct 20, 2026Oct 24, 2026
33% below market on Oct 20, 2026, 33% below on Oct 24, 2026.
48
compounds
88%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Its product descriptions say independent, batch-specific third-party analytical testing
LOT MATCH
Says batch-specific testing documentation is available for review.
where this comes from
No COA page is public
TESTED FOR
Identity, purity and peptide content (stated).
Not visible without a login
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Welli Labs Inc (name on its login page)
See its prices →Visit site ↗
Checked Oct 24, 2026
Wellness Peptides
wellnesspeptides.io ↗
At the median
vs median
Price position
Oct 20, 2026Oct 24, 2026
At the market median on Oct 20, 2026, at the market median on Oct 24, 2026.
49
compounds
99%
in stock
Testing
0 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
The site requires a login to browse.
LOT MATCH
No: nothing is shown to visitors.
TESTED FOR
Nothing shown to visitors.
where this comes from
The site opens only to registered accounts, so there is nothing a visitor can check.
Not visible without a login
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
See its prices →Visit site ↗
Checked Oct 24, 2026
Wellness Research Supply
wellnessresearchsupply.com ↗
9% under
vs median
Price position
Aug 26, 2026Oct 24, 2026
2% above market on Aug 26, 2026, 9% below on Oct 24, 2026.
10
compounds
93%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
LOT MATCH
Says a certificate covers each lot.
TESTED FOR
The store does not say.
Not stated before checkout
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
No company name or address published.
more about this seller
Phone 1 (800) 574-2278.
See its prices →Visit site ↗
Checked Sep 28, 2026
Xcel Peptides
xcelpeptides.com ↗
7% over
vs median
Price position
Aug 26, 2026Oct 24, 2026
17% below market on Aug 26, 2026, 7% above on Oct 24, 2026.
68
compounds
99%
in stock
Testing
2 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
No lab named.
where this comes from
Outside reviews: Janoshik
LOT MATCH
The store does not say.
TESTED FOR
The store does not say.
cards, crypto (outside reviews)
No coupon
No Finnrick test results
WHO RUNS IT
No company name, address or phone published.
FDA warning letter, December 10 2024
Letter 694608 is on file at fda.gov. A letter does not mean a seller is dishonest or that its products are bad. Read more ↗
See its prices →Visit site ↗
Checked Oct 17, 2026
Xeno Peptides
xenopeptides.com ↗
1% under
vs median
Price position
Sep 12, 2026Oct 24, 2026
7% below market on Sep 12, 2026, 1% below on Oct 24, 2026.
20
compounds
100%
in stock
Testing
4 of 5
Named lab · Lot COA · HPLC · Mass spec · Outside tested
LAB
Chromate Labs and BT Labs
where this comes from
Named on its home page
LOT MATCH
Batch-specific COA on each product page and shipped with the order.
TESTED FOR
Purity by HPLC, identity by mass spec (stated).
where this comes from
Claims 98%+ purity
Card through a PCI-compliant processor (card processing has been down for maintenance at times) and Zelle, per a reviewer
No coupon
No warning letter, no copied name
No Finnrick test results
WHO RUNS IT
Xeno Research LLC
more about this seller
5900 Balcones Drive STE 100, Austin, TX 78731 (a widely used virtual-office address); its Trustpilot profile gives 14999 Preston Rd Ste 112, Dallas, TX 75254.
See its prices →Visit site ↗
Checked Oct 24, 2026

Sellers on this page sell products labeled for research use only. That label means the products are not for human consumption. Peptide Decoding lists prices for information only — we don't sell peptides and don't vouch for any listing.

How this page is put together

Everything on a store's profile comes from the store's own pages or from a named public source. When a fact comes from somewhere else, the line says where: “per its BBB profile”, “per an outside review”. When a store publishes nothing, we write “Not named” or “Not stated” and leave it at that. We do not guess.

Stores choose which certificates to publish. A store that puts up one good certificate and holds three back looks the same here as a store that published the only one it has, and we have no way to see the difference. What this page records is what a store shows.

Testing covers five checks: whether the lab is named, whether a certificate can be matched to the lot on your vial, whether purity was measured by HPLC, whether identity was measured by mass spectrometry, and whether the testing was done by a lab the store does not own. These come from the store's testing pages and the certificates it publishes. A store that says “third-party tested” without naming a lab is recorded as “Not named”.

"Who runs it" covers the company name, address, phone, how long the store has been around, and any domain moves or look-alike sites. Addresses appear as the store gives them, and a mailbox or registered-agent address is noted as one. Domain registration dates come from the public domain registry.

Accepts credit cards reads “Yes” only when the store says so before checkout. Otherwise it reads “Not stated before checkout”.

Price position shows how a store's prices run against the median for the same products at other stores. It is arithmetic on the prices we publish.

Not every listing can be compared. A listing enters a price-per-milligram comparison when it is a single vial rather than a multi-vial pack, one compound rather than a blend, sized in milligrams, in stock, priced where you can see it without an account, and read from the listing rather than inferred from a range or a starting price. Capsules, sprays, solutions, strips, topicals and bulk powders are listed in their own sections and stay out of those figures. Comparisons are made within a vial size, never across sizes, because price per milligram falls as vial size rises.

Warning letters come from fda.gov and are matched to a store by the website the letter names, never by name alone. A warning letter does not mean a store is dishonest or that its products are bad. Use this more as a heads-up. Stores that get a warning letter sometimes close, rename or stop selling the products the letter names, so it is worth knowing. Status lines note plain facts, such as a store that requires a login.

Stores in this market open and close often, sometimes without notice. When a store's site stops loading or starts sending visitors somewhere else, its profile gets a dated status line saying so. The profile stays up for sixty days, because sometimes sites do come back. If the site is still down after that, the store comes off this page.

Where an independent service has published test results for a store, we link to them.

We do not test anything ourselves, and we do not check a certificate against the issuing laboratory's own records. A met check means the document exists and says what it says.

The number beside each store is how many of the five checks it meets. Nothing is weighted, and a store at four is not ranked above a store at three anywhere on this site. The count describes what a store publishes; it is not a verdict on the store. There are no star ratings and no review counts on this page.

Some vendors pay this site a commission when you buy through our links. Every one of those links is marked, and every vendor with that arrangement is labeled. Commissions never change what a profile says or the order of any list. The facts are collected the same way for every vendor, paid or not.

We accept no payment for coverage, placement, or ratings. If a paying vendor earns a bad mark, the mark stays.

How prices are compared

Changes to this page

October 21, 2026. A testing check now counts only where a store publishes something a reader can check. A claim on its own no longer counts, and some stores' counts fell as a result.

Common questions

How many peptide vendors does this site track?

208 vendors, with prices last read Oct 18, 2026.

How many stores require an account to see prices?

10 of the 208. Nine show their catalog only after you log in, and one hides part of it. Where we could see prices from a logged-in account, they appear in the tables like any other store's.

How many have received an FDA warning letter?

9. A warning letter is a public document about a specific product and a specific date. It does not by itself mean the seller is dishonest or that its other products are bad. The vendor's row links to the letter.

Do vendors pay to be listed or ranked?

No. Some pay a commission when a reader buys through a link, and those stores carry a Partner tag. Commissions never change the prices shown, the sort order, or the testing facts.

Peptide vendors

99 Purity Peptides

Aavant Research

Alpha Peptides

American Peptides

Amino Club

Amino USA

Apex Peptide Supply

Arcane Peptides

Arctic Lab Supply

Ascend Science

BioInfinity Lab

Biolinx Labs

Biologix Labs

Cosmic Peptides

Direct Peptides

Disguised Alpha

Elite Miami Peptides

Endura Peptides

Eon Peptides

Evolve BioPep

Evolve Peptides

Felix Chemical Supply

Glacier Aminos

HLX Labs

Ion Peptide

Iron Peptides

Kylo Peptides

Licensed Peptides

Loti Labs

Lumera Labs

Luvaminos

Modern Aminos

Modified Aminos

Moglabs

Nation Peptides

Nationwide Peptides

Nexaph

Nextgen Peptides

Northline Labs

Nura Peptide

Oasis Labs

Oath Research

Orbitrex Peptides

OROS Research

Panda Peptides

Peak Lab Peptides

PeakForce Labs

PeakForm Peptides

Penguin Peptides

Peptide Crafters

Peptide Partners

Peptides 4 Research

PeptidesSource

Peptidology

Peptira

Pepvida Labs

Platinum Lion

Polaris Peptides

Prime Lab Peptides

Prime Pep Solutions

Prime Peptides

Prism Labs

Proxiva Labs

PSPeptides

Pure Bio Labs

Pure Health Peptides

Pure Lab Peptides

Real Peptides

Ryder Research Supply

Stemcode Peptides

Synthro Lab

TrueLab Peptides

Trustedpeps

Tydes

Umbrella Labs

Validated Peptides

Value Research Labs

Veratis Bio

Verified Peptides