Batch-specific by definition
A COA describes the batch it was issued for and nothing else. Two batches of the same compound made by the same process will have their own certificates, and small differences between them are normal. A certificate presented without a matching batch number tells you nothing about the vial in front of you.
This is why the batch number on the vial, on the outer box and on the certificate should agree. Where they do not, the material should be treated as undocumented until the discrepancy is resolved.
What it typically contains
- Product name and sequence or description
- Batch or lot number
- Purity by HPLC, with the method stated
- Identity confirmation, usually by mass spectrometry
- Appearance
- Production and expiry dates
- Storage conditions
Reading it carefully
The single number most people look at is purity. It is worth reading what surrounds it: the method line tells you how the figure was produced, and a purity figure produced under a different gradient is not directly comparable to another.
The dates matter as much as the purity. An expiry date on a lyophilized peptide is a statement about the material stored as specified, not about a vial that has spent a month on a bench.
Research use only. This page is explanatory and does not recommend any use, quantity or procedure. REVIVE LAB supplies reference materials for laboratory research. These are not medicines and are not for human or veterinary consumption. Anyone considering the use of any compound in humans should do so only under qualified medical supervision.