How to read a hemp certificate of analysis
A field guide to the identity, cannabinoid, contaminant, and method information found on a hemp COA.
Match the document to the product
First confirm the product or batch identifier, sample date, laboratory name, and report date. A report is most useful when the identifier can be matched to the actual batch being offered.
Check whether the laboratory is identified and whether the report provides a way to verify the original document.
Read the analyte table carefully
Cannabinoid tables may show concentration by percentage or weight. The reported total values often rely on a stated calculation, so read the notes and units rather than comparing only the largest number.
A cannabinoid panel is not automatically a full safety panel. Pesticides, heavy metals, microbial contaminants, mycotoxins, residual solvents, and other panels may appear separately.
Know the report’s limits
A COA describes the submitted sample and the tests listed on that report. It does not prove every claim about cultivation, flavor, effects, or every unit produced.
When a batch document is not visible, ask support for the most relevant available documentation before ordering.