What the checklist can and cannot tell you
A certificate that passes every check is traceable: you can confirm who tested what, when, and that the record matches. It still describes only the sample that was tested, not every vial from that seller. What one vial tells you about a batch.
For the details behind each check, read twelve red flags on a peptide COA and the annotated COA walkthrough, or compare figures with the purity calculator.