Trusted Peptide Vendors
A curated list of reputable peptide vendors with third-party HPLC testing, published Certificates of Analysis (COAs), and verified reputations. Always verify the legality of purchasing peptides in your jurisdiction.
What Makes a Vendor Trustworthy?
Third-Party HPLC Testing
Independent lab verification of purity and identity — not the vendor’s own in-house tests.
Published COAs
A Certificate of Analysis for each batch, freely available, not gated behind support tickets.
Community Reputation
A track record of consistent quality and responsive customer service documented in community forums.
Finnrick Testing
Participation in independent testing programs like Finnrick adds an additional layer of verification.
Our Recommended Vendors
US-based vendor with third-party HPLC testing and published COAs. One of the few reputable sources we've verified for research-grade peptides.
Swiss Chems
Finnrick CFinnrick grades are based on independent HPLC lab testing. Learn more · Finnrick is a commercial service — ratings are third-party, not independent.