Tools · Verify

Verify your vial — check the COA

Pick your vendor to see how their certificates of analysis actually verify, jump to the COA surface, and learn exactly what to check on the document.

Your vendor Batch / lot number (optional)

How to read a COA

Peptide identity — the compound named on the COA matches your vial (and its sequence/formula if listed).
Purity — a % by HPLC (identity) and ideally MS (mass confirms it's the right molecule). ≥98% is typical for research peptides.
The lot matches — the batch/lot on the COA equals the one printed on your vial. A COA for a different lot proves nothing about yours.
Injectables — look for endotoxin (sterility-adjacent) and, ideally, sterility testing.
Who ran it — an outside lab (Janoshik, Kovera, etc.) with its own verifiable result page beats a vendor-hosted image you can't cross-check.
Date — recent enough to correspond to current stock.

We link to vendors' public COA surfaces and grade how their evidence verifies — we do not validate individual lots, and a linked COA is the vendor's claim, not ours. Shopping on trust? See the full trust system →