A Certificate of Analysis (COA) is an official document provided by a manufacturer or an independent laboratory that details the results of tests conducted on a product or material. It certifies that the product meets specified quality, safety, and regulatory standards.

The COA typically includes key information such as product identification (name, lot or batch number), details of the testing methods used, test results compared to defined standards or specifications, and the signature of an authorized quality assurance representative. It is a critical document that ensures trust, compliance, and quality control in products by providing verified test results and confirming conformity to standards.