A certificate of analysis (COA) is a report from an independent laboratory that shows what is in a product: cannabinoid levels such as Δ9-THC and THCA, and in many cases tests for residual solvents, heavy metals and pesticides. Checking the COA is one of the best ways to confirm you are buying a genuine, compliant product — and it is a key step in our guide to spotting fake Brix carts.
How to Read a COA
- Match the product: the product name, strain and batch or lot number should match the item you bought.
- Check Δ9-THC: hemp products must test at or below 0.3% Δ9-THC by dry weight.
- Look at total cannabinoids: THCA, Δ9-THC, CBD and CBG are usually listed as a percentage or in milligrams.
- Confirm the lab: the report should name an accredited third-party laboratory and a test date.
COAs above are published by the manufacturer and open in a new tab. Nicotine products and culinary cream chargers are not cannabinoid products and are not covered by these reports. Missing a COA for something you bought? Ask us and we will request it from the manufacturer.