Guides

A six-step checklist for checking a research-peptide vendor before you order: COAs, labs, payments, FDA records, and domain history.

What each part of a peptide certificate of analysis means: lab identity, task numbers, purity, mass spec, and how to verify a report is genuine.

Why payment methods are the fastest tell on a research-peptide vendor: card versus crypto versus Venmo-and-Zelle-only checkout.