Research Peptide Vendors: A Vetted Comparison
A curated list of research-use peptide suppliers that publish public affiliate programs and third-party-tested certificates of analysis. This page is education only — it does not recommend personal use, dosing, or sourcing in any jurisdiction. Follow each vendor's terms and your local law.
Disclosure: When you buy through the outbound vendor links on this page, You and Peptides may earn a commission on qualifying research purchases — at no extra cost to you. We do not control third-party products or compliance. See our Affiliate Disclosure for details.
- Visit PSPeptides
PSPeptides
Supplier with a public affiliate / ambassador signup. 18% commission, 90-day cookie.
- Ships from
- United States
- COA
- Lot-matched COAs published per product
- Testing
- Independent third-party HPLC
- Geography
- US + US territories only (Canada planned 2026)
- Affiliate program
- 18% flat / 90-day cookie / $50 PayPal payout / monthly
- Visit Onyx Biolabs
Onyx Biolabs
U.S. research-peptide brand with a published affiliate program and testing-focused positioning. 10% commission.
- Ships from
- Charlotte, NC, USA
- COA
- Per-batch COA + Mass Spec
- Testing
- In-house + third-party HPLC
- Geography
- United States
- Affiliate program
- 10% flat / monthly NET-30 hold / PayPal
- Visit PeptidesSource
PeptidesSource
Publishes an affiliate program page; commercial terms gated until you apply.
- Ships from
- United States
- COA
- COA available
- Testing
- Third-party tested
- Geography
- US-focused
- Affiliate program
- Apply to learn — terms not public
- Visit PeptLabs
PeptLabs
Widely promoted research-use peptide catalog; no public affiliate program — contact required.
- Ships from
- United States
- COA
- Lot-matched COAs with QR codes
- Testing
- ISO-certified lab
- Geography
- United States
- Affiliate program
- No public program — contact PeptLabs to negotiate
How we vet vendors
We selected vendors with clear public research use language and a published partner or affiliate program. Always verify HPLC/COA, reputation, and legal fit for your situation before buying lab materials. See our Editorial Policy for the full criteria.