Independent Analytical Programme

Certainty, measured.

Medutest procures peptides and research compounds under blind protocols, submits them to accredited commercial laboratories, and publishes every result — favourable or not. 35,156 samples across 218 vendors and 295 products, on the public record.

Consult the vendor ledger Submit a sample — free

35,156

Samples assayed

218

Vendors on file

295

Products covered

The Current Tables

Updated 21 Aug 2026

Tirzepatide(GLP-1 and GIP agonist)

126 vendors examined

I Tianjin Finder Chemical TFCA II Trusted PeptideA III Risynth BioA IV Aavant ResearchA V Nantong Guangyuan Chemical GYCA

Complete table →

Retatrutide(GLP-1, GIP, and GCGR agonist)

153 vendors examined

I Tianjin Finder Chemical TFCA II Bulk Peptide WholesaleA III Paradigm PeptideA IV NUPEPS PeptidesA V Peptide PartnersA

Complete table →

Semaglutide(GLP-1 agonist)

54 vendors examined

I Tianjin Finder Chemical TFCA II Bulk Peptide WholesaleA III InjectifyA IV Shanghai Sigma Audley SSAA V NextechLabsA

Complete table →

BPC-157(Bepecin)

70 vendors examined

I Tianjin Finder Chemical TFCA II Qingdao Sigma Chemical QSCA III Glbiochem (Shanghai)A IV Shanghai Sigma Audley SSAA V Wuhan Wansheng Bio (WWB)A

Complete table →

GHK-Cu

52 vendors examined

I Tianjin Finder Chemical TFCA II Pharma Grade PeptidesA III Qingdao Sigma Chemical QSCA IV Bulk Peptide WholesaleA V Orbitrex PeptidesA

Complete table →

Ipamorelin(GHS agonist)

54 vendors examined

I Tianjin Finder Chemical TFCA II Peptide PartnersA III InjectifyA IV Peptide SciencesA V Qingdao Sigma Chemical QSCA

Complete table →

Every Medutest sample is taken through the complete panel — identity (LC-MS), purity (HPLC-UV), content & potency, heavy metals (ICP-MS), bacterial endotoxins (LAL) and sterility (USP <71>) — and any single failure is published in full, never averaged away. See the methodology, the statistics or the FAQ.