What is a COA (certificate of analysis)?
Definition
A certificate of analysis is a laboratory's report of the tests performed on a specific sample, the methods used and the results.
What a useful COA contains
- The product and the lot number, matching the lot printed on the vial.
- The testing laboratory, its contact details and its reference numbers for the sample.
- Dates the sample was received and the results reported.
- Each result paired with a named method.
- The raw evidence: the chromatogram behind the purity figure and the mass spectrum behind the identity result.
Tesamorelin certificates
Every Tesamorelin lot has a certificate from ILS Laboratories, an independent laboratory, reproduced as a readable page in the COA archive. Each certificate carries the laboratory's QR code so results can be confirmed with the lab directly. You can look up any lot at buytesamorelinpeptide.com/verify/.
What a COA does not show
A COA describes one sample on its test date. It does not establish stability afterward or suitability for any particular purpose, and it covers only the tests listed on it.