Understanding Certificates of Analysis (COA) for Research Peptides

A Certificate of Analysis is the single most important document in research-peptide supply. It's the formal record connecting a specific manufactured batch to the analytical testing performed on it — and it's the difference between a supplier that verifies and a supplier that merely asserts.

What a legitimate COA contains

At minimum: the product name and sequence, a unique batch or lot number, the date of analysis, the HPLC purity result with the actual chromatogram, the mass-spectrometry result showing observed versus theoretical molecular weight, and identification of the laboratory that performed the analysis.

Red flags

Be wary of COAs with no batch number (a generic certificate can be recycled across every shipment), results that are suspiciously identical across different products, purity figures with no chromatogram attached, or documents with no testing laboratory identified. A COA that cannot be tied to the vial in your hand is decorative, not evidentiary.

How we handle COAs

Every Australian Peptide Lab batch is assigned a code printed on the vial label. The matching COA ships with your order and can be requested any time by emailing us the batch code. Full traceability, from synthesis run to your bench.

All products discussed are for in-vitro laboratory research only and are not for human or veterinary use.