Guide
How to Read a Certificate of Analysis
A practical guide to lab results — cannabinoids, terpenes, and the contaminants that actually matter.
Dr. P. OseiScience CorrespondentFeb 12, 20251 min read
A COA is the single most useful document a shopper can learn to read.
Start with the basics
Total THC and total terpenes tell you more together than either does alone.
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