COA library
Lab certificates, in one place.
5 of our suppliers publish a Certificate of Analysis (COA) — a third-party lab report on a compound's purity. Each link below goes straight to the supplier's own published report so you can read the lab, the method and the result yourself before you buy. We do not print a purity number we have not verified.
Ameano PeptidesCOA library
Lab not named by supplier
Ascension PeptidesSample COA
Lab — Third-party CLIA-certified labs (3 sources)
NG PeptidesSample COA
Lab — Multiple — Freedom Diagnostics / BioRegen / ILS Laboratories
Royal PeptidesSample COA
Lab — Janoshik Analytical (verify.janoshik.com)
Verified PeptidesCOA library
Lab not named by supplier
Suppliers not listed here verify in-house or send the COA with the shipment — see each supplier's profile for its COA policy. How we read and weigh lab reports is on the methodology page.