A Certificate of Analysis (COA) is a document, produced by a testing laboratory, that reports the specific tests performed on a specific sample and the results obtained — commonly identity and purity, along with the method used for each, the date tested, and the laboratory’s identification. It is a record of what was measured, not a marketing document.
On a NuePharma lot record, the COA is the signed document itself — the underlying evidence — alongside the chromatogram it is based on, published as issued rather than redrawn or summarized.
What a certificate contains. At minimum: what the material is said to be, which lot it describes, what tests were run, the method used for each, the result each produced, the date of testing, and who performed it. A certificate missing any of those is harder to act on than it looks.
Method matters as much as result. “98.6% pure” means nothing without the method beside it. Purity by reverse-phase HPLC area percent, identity by mass spectrometry, and a number with no method attached are three different classes of statement. The method is what makes a figure checkable.
Who issued it. A certificate from a named third-party laboratory and one produced in-house are both legitimate documents, but they are different kinds of evidence. An unnamed “independent lab” is an assertion nobody can check.
What it is not. A certificate is not a guarantee of fitness for a particular purpose, and it describes the material at the moment it was sampled. It says nothing about how the material was handled afterwards.