An independent review of each research-peptide vendor we list — scored on the same 100-point Standard as the rest of the site, from the lab evidence and policies they actually publish. Never ranked by commission.
Research reference only. AmericanPeptide does not sell peptides.
Ranked by transparency score, strongest first. Each review breaks down exactly how the score is earned — and what to watch for. Reviews score vendors on evidence, not marketing; a supplier can never buy a better number.
Amino Club
Independently documentedUS research-peptide distributor; every batch ships a lot-matched third-party COA (MZ Biolabs / Janoshik) at ≥99% HPLC purity.
BioLongevity Labs
Independently documentedUS-manufactured research peptides with a public, per-lot COA database — every product searchable by its own report number, tested by independent labs at 99% stated purity.
ABSIM Peptides
Vendor-claimed testing FeaturedUS research-peptide supplier publishing a certificate of analysis on every product listing; cGMP-compliant manufacturing, free US shipping over $200.