What is a Certificate of Analysis (CoA)?
A Certificate of Analysis records reported measurements, such as identity, amount and — if measured — purity. Published reports at RetaEU can be viewed by batch number. The original report determines which data is available.
- Common method
- HPLC
- Verifiable by
- Batch number
- Public
- After publication
What's on a CoA?
A CoA describes the analysis performed and its reported results. The available data varies by report. Not every report states a method or purity percentage; some report only identity and amount.
Check that the report covers the correct batch and quantity. A report for one quantity does not automatically cover other variants.
Why it matters
Without a CoA, purity is a promise, not a fact. An independent lab report makes the claim checkable and traceable to one production run.
That's exactly why RetaEU treats the CoA not as an add-on but as the core of the product.
How to verify it
Enter the batch number on the Lab page. If a published report is available, you can view it. Purity is shown only when the report provides it.
- ICH — Q6A — Specifications
- USP — <1226> Verification of Compendial Procedures
Check it yourself by batch number.
Verify a batch number