Glossary · Lab
Certificate of Analysis (COA)
Lab report on a specific batch of a specific product. Confirms active fraction, heavy metals, and microbial counts.
Plain language
The receipt that proves what is actually in the bottle. If a brand will not show you a current COA from a credible third-party lab, that is the answer.
Definition
A certificate of analysis is a lab report on a specific batch of a specific product, listing the active fraction (with assay method), heavy-metals load (lead, cadmium, mercury, arsenic), microbial counts (TAMC, TYMC, E. coli, Salmonella), and identity confirmation. Each batch produced by a manufacturer should have its own COA, and the batch number on the COA must match the batch on the bottle.