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| Certificate of Analysis (COA) |
How to Read a CBD Lab Report (COA): A Beginner’s Guide
Understanding third-party testing for safe and effective CBD products
When shopping for CBD, one of the most important things you can do is check the Certificate of Analysis (COA) — a lab report from an independent testing facility.
COAs help ensure the product contains what it claims and is free from harmful contaminants.
What Is a COA?
A COA is a detailed document that shows the results of laboratory testing performed on a cannabis or hemp product.
It typically includes:
- Cannabinoid profile (CBD, THC, and others)
- Terpene profile
- Tests for pesticides, heavy metals, solvents, and microbes
- Batch or lot number and testing date
How to Read the Cannabinoid Profile
Look for the percentages or milligrams of:
- CBD: The primary cannabinoid you want
- THC: Should be below legal limits (0.3% or less for hemp-derived products)
- Other cannabinoids: Such as CBG, CBC, or CBN, which may add benefits
Understanding Terpene Profiles
Some COAs include a terpene breakdown, listing compounds like myrcene, limonene, and pinene. This helps you know the aroma and potential effects.
Checking for Contaminants
Safety is crucial. Verify the product is free from:
- Pesticides
- Heavy metals (lead, arsenic, mercury, cadmium)
- Residual solvents (from extraction)
- Microbial contamination (bacteria, mold)
A passing COA means the product is tested and safe for consumption.
Batch Numbers and Dates
COAs are specific to batches. Always check that the COA matches the product’s batch or lot number and that testing is recent.
Where to Find COAs
Reputable brands post COAs on their websites or provide them upon request. If you can’t find one, consider it a red flag.
Knowledge is power — reading COAs puts you in control of your CBD experience.
© Tennessee Cannabiz

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