A Certificate of Analysis, or COA, is a lab's report on a peptide batch. It is the single document that tells you whether a vial is what the label claims. Most people are handed one and have no idea what to look for. Here are the seven checks that matter, in plain language.
Grade a COA in the TR8CE app ›Does the report confirm the compound is what the label says? A good COA names the compound and shows a mass-spec or HPLC identity match that conforms.
What percentage of the sample is the actual peptide versus impurities? The bar for quality research material is 98% or better by HPLC.
How much peptide is actually in the vial versus the label claim? Net content should land close to 100% of the stated amount, not far under or over.
Bacterial endotoxin should test at or below the reported limit. A blank here means the test was not run, not that it passed.
A sterility result should read no growth. Again, a missing line means untested, not clean.
Lead, cadmium, arsenic, and mercury should each read negative or below limit.
On a multi-vial batch, the values should be consistent vial to vial rather than one good sample carrying the lot.
A full COA answers all seven. A partial report is not a failure, it just means fewer tests were run: an honest read is "incomplete, ask for a full panel", never "unsafe". A single missing line means untested, not passed. The TR8CE app photographs a COA and grades it against these seven gates in about thirty seconds, then explains each one.
A Certificate of Analysis is a lab report on a specific batch. It states the identity, purity, and content of the material and may include safety tests, telling you whether the vial matches its label.
Quality research material reads 98% purity or better by HPLC, with net content close to 100% of the labeled amount.