Free shipping on orders over $350 within the continental US

COA Library

Every batch we list is tested for quality assurance. Search by product name or lot number and open the Certificate of Analysis (COA) for the batch you are researching with.

Quality Assurance Program

Third-Party Tested, Lot by Lot

Every batch we sell is submitted to an independent, ISO/IEC 17025-accredited laboratory before it ships. The exact panel varies by product and lot, and may include identity, purity, net content, multi-vial variance, endotoxins, heavy metals, microbial testing, residual solvents and adulterant screening. Below you can open the published report for any lot — the file is the lab's own PDF, not a summary.

  • Independent third-party testing
  • ISO/IEC 17025 accredited laboratory
  • Original lab PDFs published for every lot
Filter & sort

12 products · 12 lots · 12 certificates

Research use only

The reports below are for in-vitro laboratory research use only. They are not for human or animal consumption, and they are not medical, diagnostic or therapeutic advice. Handling is restricted to qualified research professionals at least 21 years of age.

Join the Optimal Peptides Newsletter

Stay up to date on restocks, product launches and sales.

By subscribing you agree to receive emails from us. Unsubscribe any time.