Quality

How to Read a Peptide Certificate of Analysis

Sep 18, 2026

A Certificate of Analysis (COA) is a laboratory report for a specific lot. Open it on the product page when it is listed, or ask for the current lot with your quotation.

What buyers usually check

Product name and catalog number match the SKU you inquired about.
Lot or batch number so you can keep the file with the goods you receive.
Test items and results as printed by the laboratory. Do not assume a missing test was performed.
Date so you know the report is for that lot, not a generic brochure.

What a COA is not

A COA is not an FDA drug approval, a GMP factory certificate, or a consumer quality seal. Buyers may arrange independent testing after receipt.

If you need a different lot

Each COA is for a specific lot. Ask on WhatsApp if you need the report that will ship with your order.