Product name and sequenceShould match exactly what you are looking at, including the specific peptide name.
Lot or batch numberMust match the number on the vial or packaging. A COA for a different batch tells you nothing about yours.
Test dateRecent enough to be relevant to the batch in hand.
Testing laboratoryThe lab’s name and contact details, so the report can be verified with the lab directly.
MethodWhich tests were run (for example HPLC for purity, MS for identity).
Results with the dataThe actual chromatogram and mass spectrum, not just a pass stamp or a single number.
Expected vs measured massThe identity test should show the measured mass next to the theoretical mass.
Signature or authorizationWho reviewed and approved the report.
Red flags
The lot number on the COA doesn’t match your vial, or there’s no lot number at all.
The same COA is used for every batch, or shows a date years old.
Purity is listed with no chromatogram, or the chart looks copied or edited.
There’s no identity test, only purity.
The lab can’t be found, can’t be contacted, or won’t confirm the report.
Results that look too perfect, like exactly 100.00% on everything.
Verify it yourself
The strongest step is the simplest: contact the testing lab and ask them to confirm the report and batch number. A real lab can confirm whether a report is genuine.
