Testing

Find the lot number on your vial, then find it below. Each entry links to the lab's original certificate.

How to read a certificate

Purity is measured by HPLC and reported as a percentage of the peptide content. Identity is confirmed by mass spectrometry, which checks that the molecular weight matches the expected compound. Net peptide content accounts for water and counter-ions and is the number that tells you how much active material is in the vial. We publish the lab's document unedited.