Research-use context: This article is provided for laboratory research and educational purposes only. It is not medical, therapeutic, diagnostic, veterinary, dosing or human-use guidance.
1. Is there a batch or lot number?
The report should be linkable to the batch from which the supplied material originated. A generic certificate is less useful because it does not establish that connection.
2. Is the laboratory identifiable?
Look for the testing organisation, report date and enough information to understand who generated the result. Independent testing adds a separate source of evidence alongside supplier quality controls.
3. Are identity and purity separated?
A useful report does not treat a high purity percentage as proof of molecular identity. HPLC and mass spectrometry may provide complementary evidence.
4. Is quantity addressed?
If vial quantity is a material specification, look for an appropriate quantitative result rather than assuming the labelled amount has been analytically confirmed.
5. Can the record be retained?
Researchers should preserve the COA with the lot information and experimental record. Traceability is most valuable when it survives beyond the day the material is received.