Analytical methods behind a peptide COA

Chromatographic purity is typically assessed by reversed-phase HPLC, which separates a sample so the main peptide can be measured against impurities.

Identity is confirmed by LC-MS, which checks that the measured mass matches the expected peptide.

Bacterial endotoxin testing (BET) by LAL-based methods is a separate analytical check; endotoxins are lipopolysaccharide fragments from certain bacteria that laboratories monitor against defined acceptance limits.

Together these methods describe the material for laboratory reference. They do not establish suitability for any human or veterinary use.