A Certificate of Analysis (COA) is a document that basically contains the test results of analytical testing performed on cannabis products by licensed laboratories. The COA lists the levels of cannabinoids and testing results for mold, pesticides, microbials, heavy metals, and other contaminants. The COA provides an easy way to review test results for purity and potency of cannabis products and to ensure they are safe for consumption.

COAs for CBD products are not always mandatory in all states unless purchased from a dispensary. It is important to know that the product you purchase contains the compounds you desire in safe quantities and that it is free from impurities. For this reason, it is recommended to purchase all cannabis products from a licensed source where the proper product testing has occurred.