How to read a Certificate of Analysis

A Certificate of Analysis (COA) is a technical document issued by an independent laboratory that certifies the identity, purity, and contaminant profile of a compound. It is the single most important piece of documentation a research supplier can provide.

Identity confirmation is typically established via HPLC-MS or NMR. This verifies that the molecule in the vial is, in fact, the molecule described on the label. For peptides, the mass should match the theoretical molecular weight.

Purity is usually measured by HPLC and reported as a percentage. 98%+ is the standard floor for research-grade material. Vivaprime's EU facility releases against a 99% minimum specification.

Residual solvents and endotoxin levels are also reported. For injectable research applications, low residual solvent levels matter. Endotoxin testing (LAL) is performed batch-by-batch.

When you land on a Vivaprime product page, the COA for the most recent batch is linked directly. Every batch we ship is traceable to its specific COA.