Reading a Certificate of Analysis
Documentation & Quality
The COA is the backbone of scientific transparency. Learn what it verifies, what it does not, and how to request one.
What a COA verifies
Every batch is analyzed by independent laboratories using HPLC. The COA reports identity and purity results for that specific batch. It is the customer’s proof that the material received matches the specification on the product page. Offer COAs proactively — a researcher who asks for documentation is a researcher you want to keep.
Limits of a COA
A COA verifies chemical identity and purity for the batch. It does not certify safety, efficacy, or fitness for any particular study — those conclusions belong to the researcher and their protocols. Never present a COA as proof that a compound "works" or is safe for any use.
Key takeaways
- HPLC-verified COAs are available for every batch — offer them first.
- A COA proves identity and purity, nothing more.
- Researchers’ own protocols determine suitability for their studies.
All PeptLife Global products are for laboratory research use only — not for human or veterinary use or consumption.