A COA (or C of A) is a “Certificate of Analysis” and is one of the most important tools you have to determine the quality and purity of a CBD product. It is also the most important tool you have to ensure that you are getting the amount of CBD you are paying for. … Because the CBD market right now is not regulated

In addition to the potency of ingredients, the COA is vital for consumers to determine whether or not the product is free from harmful contaminants such as heavy metals, pesticides, molds and bacteria.  USDA and State guidelines require that all products be tested. If there is no COA available do not consume or buy the product.