Quality & Testing

How to read a COA

6 min read · 2026-07-07

Batch IDs, purity results, and what to verify before you trust a certificate.

A certificate of analysis is useful only when it maps to the material in hand.

Checklist

Confirm the batch / lot ID matches your vial

Review identity method (often LC-MS / mass confirmation)

Review purity method (often HPLC)

Note the testing lab and date

Keep the COA with your order records

Authenticated customers can access COA documentation from product and order surfaces where available.