Product-quality literacy
COA Check Guide
Use a structured checklist to understand what a Certificate of Analysis can tell you — and what it cannot.
A COA is not a guarantee. A report can describe a tested sample. It does not automatically prove every vial sold under the same label has the same identity, content, sterility or handling history.
0 of 6 checks marked. This checklist does not certify a product or supplier.
Common red flags
No batch identifier; unverifiable laboratory details; image-only reports; purity presented as proof of sterility; sample description that does not match the product; a report reused across unrelated batches; or a method/result that cannot be tied to the material actually being assessed.
What this checklist cannot do
It cannot authenticate a vial, certify a supplier, prove chain of custody, determine whether a sample is representative of every unit sold, or convert product-quality testing into evidence of clinical safety or benefit.