Why it matters
A complete CBD COA should disclose cannabinoid potency (CBD, CBDA, THC, CBG, CBC, CBN at minimum), heavy metals, residual solvents (for solvent-extracted products), pesticides, and microbial contaminants. The lab name, accreditation status, batch ID, and date should all be visible. ISO 17025 accreditation is the strongest credential.
In practice
For consumers the COA closes the gap between marketing and product. A vendor that links a batch-specific COA from the product page has met the transparency standard the CBD industry’s advocates have argued for since 2018.
Common confusion
COA quality varies. A COA from an unaccredited lab, undated, or for a different batch than the one being sold provides limited assurance.
This glossary entry is editorial content reviewed against primary sources. It is not medical advice. See our Editorial Policy.