Every peptide seller, graded by certificate

The short answer

99 peptide storefronts, read one by one. Each one is graded A, B or C from the certificate on the site, with the reason printed. Nothing here is for sale from us.

Tier A: 57
Tier B: 10
Tier C: 32

How a seller is graded

Tier A is a current lab-linked certificate issued to this storefront

Current certificate, independent laboratory named. Tier B: certificate published, but no laboratory link, or older than a year. Tier C: no certificate could be read.

We never charge for knowledge. This site is 100 percent supported by affiliate income, disclosed on the row it comes from, and no vendor has a say in what a page says.

The tier is what could be read on the date shown, not a verdict on the vendor.

Alpha Omegaalphaomegapeptide.com

Certificate from Freedom Diagnostics dated 2026-08-21

Newest certificate: 2026-08-21
Offers read: none yet
Platform: WooCommerce

Alpha Peptidesalpha-peptides.com

Certificate from Analytical Formulations, Inc. dated 2026-05-01

Newest certificate: 2026-05-01
Offers read: none yet
Platform: WooCommerce

Arcane Peptidesarcanepeptides.com

Certificate from Vanguard Laboratory, Freedom Diagnostics, Chromate dated 2026-09-04

Newest certificate: 2026-09-04
Offers read: 16
Platform: WooCommerce

Ascension Peptidesascensionpeptides.com

Certificate from MZ Biolabs, Kovera Labs dated 2026-05-23

Newest certificate: 2026-05-23
Offers read: 21
Platform: WooCommerce

BioLongevity Labsbiolongevitylabs.com

Certificate from MDx BioAnalytical Laboratory, BioRegen, Instamed dated 2025-11-19

Newest certificate: 2025-11-19
Offers read: 12
Platform: WooCommerce

Biotech Peptidesbiotechpeptides.com

Certificate from MZ Biolabs dated 2026-08-10

Newest certificate: 2026-08-10
Offers read: 28
Platform: WooCommerce

Blank Peptidesblankpeptides.com

Certificate from Horizon Analytical, Freedom Diagnostics dated 2026-08-30

Newest certificate: 2026-08-30
Offers read: 23
Platform: WooCommerce

Bulk Peptide Supplybulkpeptidesupply.com

Certificate from MDx BioAnalytical Laboratory, AV Analytics dated 2026-09-06

Newest certificate: 2026-09-06
Offers read: 49
Platform: WooCommerce

Bulkpeptidesbulkpeptides.com

Certificate from Vanguard Laboratory, Freedom Diagnostics dated 2026-09-09

Newest certificate: 2026-09-09
Offers read: 24
Platform: WooCommerce

CertaPeptidescertapeptides.com

Certificate from Janoshik Analytical dated 2026-09-17

Newest certificate: 2026-09-17
Offers read: none yet
Platform: Custom (Next.js)

Core Research Peptidescoreresearchpeptides.com

Certificate from Janoshik, Freedom Diagnostics, Waiida dated 2026-06-16

Newest certificate: 2026-06-16
Offers read: none yet
Platform: WooCommerce

Crush Researchcrushresearch.com

Certificate from Vanguard Laboratory, Freedom Diagnostics, ILS Labs dated 2026-08-24

Newest certificate: 2026-08-24
Offers read: none yet
Platform: Custom (Next.js)

Disguised Alphadisguisedalpha.com

Certificate from ILS Laboratories dated 2026-07-26

Newest certificate: 2026-07-26
Offers read: none yet
Platform: WooCommerce

Endura Peptidesendurapeptides.com

Certificate from Freedom Diagnostics dated 2026-05-28

Newest certificate: 2026-05-28
Offers read: none yet
Platform: WooCommerce

EZ Peptidesezpeptides.com

Certificate from Janoshik dated 2026-06-10

Newest certificate: 2026-06-10
Offers read: 23
Platform: WooCommerce

Felix Chemical Supplyfelixchem.is

Certificate from Freedom Diagnostics, Chromate dated 2026-01-12

Newest certificate: 2026-01-12
Offers read: 18
Platform: WooCommerce

Glacier Aminosglacieraminos.shop

Certificate from Kovera Labs, Freedom Diagnostics dated 2026-06-24

Newest certificate: 2026-06-24
Offers read: 72
Platform: WooCommerce

GLP-1 Research Labglp1researchlab.com

Certificate from Accumark Labs dated 2026-07-29

Newest certificate: 2026-07-29
Offers read: none yet
Platform: Custom (Next.js)

High Tide Compoundshightidecompounds.com

Certificate from Kovera Labs dated 2026-09-13

Newest certificate: 2026-09-13
Offers read: none yet
Platform: WooCommerce

Hydro Researchhydroresearchpeptides.com

Certificate from Janoshik, Chromate Labs, ILS Laboratories dated 2026-08-24

Newest certificate: 2026-08-24
Offers read: none yet
Platform: WooCommerce

Ignite Peptidesignitepeptides.com

Certificate from Janoshik, Freedom Diagnostics dated 2026-05-11

Newest certificate: 2026-05-11
Offers read: 12
Platform: WooCommerce

Instant Peptidesinstantpeptides.com

Certificate from Kovera Labs, Freedom Diagnostics dated 2026-04-19

Newest certificate: 2026-04-19
Offers read: none yet
Platform: Custom (Next.js)

LA Peptideslapeptides.net

Certificate from Bioviridian dated 2026-07-29

Newest certificate: 2026-07-29
Offers read: none yet
Platform: WooCommerce

Lumera Labsmylumeralabs.com

Certificate from Freedom Diagnostics dated 2026-04-17

Newest certificate: 2026-04-17
Offers read: none yet
Platform: WooCommerce

Lumi Peptideslumipeptides.com

Certificate from Freedom Diagnostics, ILS Laboratories dated 2026-04-04

Newest certificate: 2026-04-04
Offers read: none yet
Platform: WooCommerce

Mile High Compoundsmilehighcompounds.is

Certificate from Vanguard, ILS Labs, Ethos Analytics, Chromate, Kovera dated 2026-09-09

Newest certificate: 2026-09-09
Offers read: none yet
Platform: WooCommerce

Modern Research Peptidesmodernresearchpeptides.net

Certificate from Freedom Diagnostics dated 2026-08-16

Newest certificate: 2026-08-16
Offers read: 23
Platform: WooCommerce

MogLabsmoglabs.bio

Certificate from Vanguard Laboratory, Freedom Diagnostics, Chromate dated 2026-09-05

Newest certificate: 2026-09-05
Offers read: 22
Platform: WooCommerce

Molecular Solutionsmspeptides.com

Certificate from Freedom Diagnostics, Janoshik dated 2026-02-18

Newest certificate: 2026-02-18
Offers read: none yet
Platform: WooCommerce

Nextgen Peptidesngpeptide.com

Certificate from ILS Laboratories dated 2026-09-18

Newest certificate: 2026-09-18
Offers read: none yet
Platform: unknown

Nova Peptidesnovapeptidesupply.com

Certificate from Freedom Diagnostics dated 2026-09-14

Newest certificate: 2026-09-14
Offers read: none yet
Platform: WooCommerce

Oasis Labsmyoasislabs.com

Certificate from Bioviridian, BioChex dated 2026-08-11

Newest certificate: 2026-08-11
Offers read: 23
Platform: WooCommerce

Oneday Compoundsonedaycompounds.com

Certificate from ILS Laboratories, Vanguard Laboratory dated 2026-08-27

Newest certificate: 2026-08-27
Offers read: 19
Platform: WooCommerce

Orbitrex Peptidesorbitrexpeptide.is

Certificate from Freedom Diagnostics dated 2026-07-25

Newest certificate: 2026-07-25
Offers read: none yet
Platform: WordPress, custom cart

Panda Peptidespandapeptides.com

Certificate from ILS Laboratories, Janoshik Analytical dated 2026-09-16

Newest certificate: 2026-09-16
Offers read: 34
Platform: WooCommerce

Peptide Crafterspeptidecrafters.com

Certificate from Accumark Labs, Vanguard Laboratory, Janoshik dated 2026-08-26

Newest certificate: 2026-08-26
Offers read: 37
Platform: WooCommerce

Peptidologypeptidology.co

Certificate from Vanguard Laboratory, Eagle Analytical dated 2026-09-18

Newest certificate: 2026-09-18
Offers read: none yet
Platform: WooCommerce

Pepvida Labspepvidalabs.com

Certificate from Vanguard Laboratory dated 2026-04-08

Newest certificate: 2026-04-08
Offers read: 8
Platform: WooCommerce

Platinum Lion Peptidesplatinumlionpeptides.com

Certificate from Freedom Diagnostics, MDx BioAnalytical Laboratory, ILS Laboratories, Chromate dated 2026-09-17

Newest certificate: 2026-09-17
Offers read: 7
Platform: WooCommerce

Prime Peptidesprimepeptides.co

Certificate from Janoshik, Freedom Diagnostics, Vanguard Laboratory, Kovera Labs, Accumark Labs, Horizon Analytical dated 2026-09-03

Newest certificate: 2026-09-03
Offers read: 15
Platform: WooCommerce

Puratek Peptidespuratekpeptides.com

Certificate from ILS Laboratories dated 2026-08-22

Newest certificate: 2026-08-22
Offers read: 15
Platform: WooCommerce

Pure Compounding Labspurecompoundinglabs.com

Certificate from ILS Laboratories dated 2026-06-09

Newest certificate: 2026-06-09
Offers read: none yet
Platform: WooCommerce

Purus Peptidespuruspeptides.com

Certificate from Janoshik dated 2026-08-25

Newest certificate: 2026-08-25
Offers read: none yet
Platform: WooCommerce

Renova Peptidesrenovapeptides.net

Certificate from Kovera Labs dated 2026-05-13

Newest certificate: 2026-05-13
Offers read: none yet
Platform: WooCommerce

Reta One Labsretaonelabs.com

Certificate from Kovera Labs dated 2026-07-10

Newest certificate: 2026-07-10
Offers read: 9
Platform: WooCommerce

Riptide Wellnessriptidewellness.com

Certificate from ILS Laboratories, Freedom Diagnostics dated 2026-04-22

Newest certificate: 2026-04-22
Offers read: 3
Platform: WooCommerce

RUOruo.bio

Certificate from Vanguard Laboratory, Chromate dated 2026-09-05

Newest certificate: 2026-09-05
Offers read: 36
Platform: WooCommerce

S1 Researchs1research.net

Certificate from Freedom Diagnostics dated 2026-02-12

Newest certificate: 2026-02-12
Offers read: 30
Platform: WooCommerce

Skye Peptidesskyepeptides.com

Certificate from TrustPointe Analytics LLC, Janoshik dated 2026-02-20

Newest certificate: 2026-02-20
Offers read: 40
Platform: WooCommerce

Solas Sciencesolasscience.shop

Certificate from ILS Laboratories dated 2026-08-05

Newest certificate: 2026-08-05
Offers read: none yet
Platform: WooCommerce

Solyn Labssolyn.com

Certificate from Vanguard Laboratory dated 2026-08-31

Newest certificate: 2026-08-31
Offers read: none yet
Platform: WooCommerce

Southern Aminossouthernaminos.com

Certificate from Freedom Diagnostics, ILS Laboratories, Chromate dated 2026-09-10

Newest certificate: 2026-09-10
Offers read: 23
Platform: WooCommerce

Spartan BioLabsspartanbiolab.com

Certificate from Freedom Diagnostics, Janoshik dated 2026-04-01

Newest certificate: 2026-04-01
Offers read: 11
Platform: WooCommerce

SwissChemsswisschems.is

Certificate from Janoshik Analytical dated 2026-09-13

Newest certificate: 2026-09-13
Offers read: none yet
Platform: WooCommerce

True Peptide Labstruepeptidelabs.com

Certificate from Freedom Diagnostics dated 2026-09-01

Newest certificate: 2026-09-01
Offers read: none yet
Platform: WooCommerce

Voltera Sciencesvolterasciences.com

Certificate from Kovera Labs, ILS Laboratories dated 2026-08-24

Newest certificate: 2026-08-24
Offers read: 6
Platform: WooCommerce

Xcel Peptidesxcelpeptides.com

Certificate from Janoshik, Chromate dated 2025-11-04

Newest certificate: 2025-11-04
Offers read: none yet
Platform: WooCommerce

Apollo Peptide Sciencesapollopeptidesciences.com

Certificate with a batch number, no laboratory named

Newest certificate: 2025-10-02
Offers read: none yet
Platform: WooCommerce

Double R Labsdoublerlabs.is

Certificate from Janoshik, Chromate, Kovera carries no readable date

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Fusion Peptidefusionpeptide.com

Newest certificate seen is dated 2025-08-01, older than a year

Newest certificate: 2025-08-01
Offers read: none yet
Platform: WooCommerce

Glow Lab Protocolsglps.shop

Certificate names Horizon Analytical but is issued to a different company than this storefront

Newest certificate: 2026-04-10
Offers read: none yet
Platform: WooCommerce

Modified Aminosmodifiedaminos.shop

Certificate from Vanguard carries no readable date

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Nation Peptidesnationpeptides.com

Certificate names Freedom Diagnostics but is issued to a different company than this storefront

Newest certificate: 2026-03-11
Offers read: 13
Platform: WooCommerce

Simple Peptidesimplepeptide.com

Newest certificate seen is dated 2025-06-18, older than a year

Newest certificate: 2025-06-18
Offers read: none yet
Platform: WooCommerce

Synthro Labsynthrolab.com

Certificate names Freedom Diagnostics but is issued to a different company than this storefront

Newest certificate: 2026-05-12
Offers read: none yet
Platform: WooCommerce

Valor Peptidesvalorpeptides.com

Certificate with a batch number, no laboratory named

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Wellness Peptideswellnesspeptides.io

Newest certificate seen is dated 2025-06-08, older than a year

Newest certificate: 2025-06-08
Offers read: 4
Platform: WooCommerce

AMC Essentialsamc-essentials.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 16
Platform: WooCommerce

Amino Sequenceaminosequence.com

Site says it tests; no certificate could be found

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

AMP Peptidesameanopeptides.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Atomik Labzatomiklabz.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 29
Platform: unknown

Aurora Peptidesaurora-peptides.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

BioEdge Peptidesbioedgeresearchlabs.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Coffee and Pepperscoffeeandpeppers.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Crownwell Researchcrownwellresearch.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 1
Platform: WooCommerce

Flawless Compoundsflawlesscompounds.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Glow Aminosglowaminos.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Ion Peptideionpeptide.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 15
Platform: WooCommerce

Iron Protocolironprotocol.com

No testing claim and no certificate found

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

LabSourcedlabsourced.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: Custom (Next.js)

Limitless Life Nootropicslimitlesslifenootropics.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: BigCommerce

Modern Aminosmodernaminos.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 26
Platform: WooCommerce

NuraPeptidenurapeptide.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Omegaminoomegamino.net

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Paramount Peptidesparamountpeptides.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 43
Platform: WooCommerce

PeptiPenbuypeptipen.com

Site says it tests; no certificate could be found

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Peptirapeptira.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Phase One Labzphaseonelabz.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: Custom

Pinnacle Peptide Labspinnaclepeptidelabs.com

Site says it tests; no certificate could be found

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Planet Peptideplanetpeptide.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 20
Platform: WooCommerce

Polaris Peptidespolarispeptides.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 37
Platform: WooCommerce

PureRawzpurerawz.co

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 20
Platform: WooCommerce

Science Based Peptidessciencebasedpeptides.com

Site says it tests; no certificate could be found

Newest certificate: none
Offers read: none yet
Platform: Custom (Next.js)

Solution Peptidessolutionpeptides.net

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 34
Platform: WordPress

Soma Chemssomachems.com

No testing claim and no certificate found

Newest certificate: none
Offers read: none yet
Platform: WooCommerce

Strand Biogetstrandbio.com

No testing claim and no certificate found

Newest certificate: none
Offers read: none yet
Platform: Custom (Next.js)

Trusted Aminostrustedaminos.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: Custom (Next.js)

Welli Labswellilabs.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: 21
Platform: WooCommerce

Zenith Biosciencezenithbioscience.com

Site says it tests; the certificates sit behind a login or a bot wall and none could be read

Newest certificate: none
Offers read: none yet
Platform: Custom (Next.js)

99 of 99 sellers.

Listed by the comparison sites, but not peptide sellers

The four comparison sites count these among their vendors. They sell accessories or skincare, are telehealth platforms, or could not be found at all.

We never charge for knowledge. This site is 100 percent supported by affiliate income, disclosed on the row it comes from, and no vendor has a say in what a page says. The tier is what could be read on the date shown, not a verdict on the vendor; a site whose certificates sit behind a login is tier C until they can be read, and says so.