Certificate of Analysis
Last updated: May 6, 2026
Every lot we sell is independently tested by accredited U.S. laboratories before it leaves our facility. A Certificate of Analysis (COA) is generated for each lot and is available on request with your order number.
What a COA Covers
- Identity — confirmed by mass spectrometry against the expected molecular weight.
- Purity — quantified by reverse-phase HPLC; we publish lots only at 99%+ purity.
- Lot & manufacture data — lot number, manufacture date, and storage instructions.
- Lab attestation — testing laboratory, accreditation, and signatory.
How to Request Your Lot COA
Email info@peptidesatx.com with your order number and the SKU you would like the COA for. We return the lot-matched PDF within one business day.
Per-Product COAs
Per-product COA libraries are coming soon. Until they are published, the request-by-email path above is the fastest way to receive the document for the specific lot you received.
Storage & Handling
Researchers are responsible for maintaining cold-chain conditions and following their institution's safety protocols once a product is received. Storage instructions on the COA take precedence over generic guidance on this page.