A certificate of analysis, or COA, is a laboratory document reporting test results for a specific sample. It is the primary document a shopper can review instead of relying on marketing language.
Start at the header
- Laboratory name, address and accreditation details
- Client or brand the sample was submitted by
- Sample name and matrix, for example 'hemp flower'
- Batch or lot identifier, which should match the product packaging
- Date received, date tested and date reported
Cannabinoid panel
This section lists each cannabinoid measured, usually as a weight percentage and milligrams per gram. Results below the method's limit of quantitation are typically marked ND or <LOQ.
Contaminant panels
Depending on the lab scope and applicable rules, a full report may include pesticides, heavy metals, residual solvents, microbiological testing, mycotoxins, water activity and foreign matter. Each panel shows the analyte, the result, the action limit and a pass or fail status.
Matching the report to the product
Confirm the batch number on the report matches the batch on the package, and check the test date. A report for a different lot does not describe the product in your hand.
We do not perform laboratory testing and we do not certify any product. Review the retailer's published report yourself.
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