What is a certificate of analysis?

A certificate of analysis (COA) is a document issued by a testing laboratory that reports what a sample contains and how pure it is. For research materials, it is the difference between a claim and a verifiable fact.

A typical COA identifies the compound, states the measured purity (often by HPLC), and confirms the molecular mass (often by mass spectrometry). It is tied to a specific batch or lot, so the result applies to the exact material you received — not a representative average across production.

An Elisvon COA reports a five-test panel for the lot: Identity (is it the right compound?), Purity (how much of it is that compound?), Net Content (does the vial hold the labeled amount?), Endotoxins (is it free of bacterial pyrogens?), and Heavy Metals (is it free of elemental contaminants?). Each line reads either as a measured value or as “within limits / conforms.”

When you read a COA, look for the lot number, the test date, the testing method, and the name of the laboratory. A result you can trace back to an independent third-party lab — ours is Freedom Diagnostics Testing — is far stronger than an in-house number, because the lab has no stake in the outcome.

At Elisvon, every batch has a published COA, and the lot number printed on each vial resolves to that exact batch’s results.