A Certificate of Analysis, commonly called a COA, brings together the results of the chemical analysis of the ingredients in a specific batch. It helps verify whether characteristics measured in the laboratory match the information provided about the product.
Start with the batch
Start by checking the batch number. It should be the same on the product and on the Certificate of Analysis. If the numbers are different, that COA does not correspond to the product you have.
Cannabinoid profile and potency
The report may show CBD, THC and other cannabinoids. Check the unit of measurement carefully and compare it with the label without making improvised conversions.
Contaminants and traceability
Depending on the scope of the analysis, the COA may include heavy metals, residual solvents, pesticides, microorganisms and other parameters. Also check the laboratory name, the date, sample identification and methodology, when available.
A COA complements but does not replace prescribing, usage guidance or quality assessment by qualified professionals and authorities.

