Glossary · Science & Effect
Certificate of Analysis
A Certificate of Analysis is a report from an independent, licensed lab that tests a cannabis batch for potency and contaminants. It confirms cannabinoid and terpene levels and screens for pesticides, heavy metals, mold, and solvents. In New York, every legal product must have one tied to its batch.
Also known as: COA, lab report, lab results, third-party test results
- Also called
- COA, lab report
- Issued by
- Independent OCM-permitted lab
- Tests for
- Potency + contaminants
- NY rule
- Required on every legal batch
What a Certificate of Analysis is
A Certificate of Analysis, or COA, is the lab report behind a cannabis product. An independent, licensed testing lab takes a sample from a production batch, runs it through a series of tests, and issues a document summarizing the results. The key word is independent. The lab is separate from the brand and has no stake in the outcome, which is what makes the numbers trustworthy.
A COA covers two big areas. First, potency: how much THC, CBD, CBN, and other cannabinoids the product contains, often with a terpene breakdown too. Second, safety: screening for contaminants like pesticides, heavy metals, mold and other microbials, residual solvents, and mycotoxins. A report that shows potency but skips the contaminant panels is incomplete.
Why it matters to you as a shopper
The COA tells you what is actually in the jar, not just what the marketing says. Potency numbers help you pick a strength that fits your experience level. The contaminant panel confirms nothing harmful slipped through. Together they let you compare products on facts instead of label hype.
How New York handles COAs
Under New York's adult-use rules, every legal cannabis product sold must have a COA from a lab permitted by the Office of Cannabis Management. Each batch or lot is tested for the cannabinoid profile plus the required contaminant screens before it can reach a shelf. If a batch fails any contaminant test, it cannot be sold. The COA is tied to a specific batch or lot number, so the number on the report should match the number on your package.
How do I read a cannabis COA?
Start with the product and batch info, then confirm the batch number matches your package. Check the cannabinoid section for total THC and CBD. Then scan the contaminant panels. You want every contaminant marked Pass, ND (not detected), or below the lab's limit. ND on a pesticide or metal is a good sign.
- ·Total THC accounts for THCA converting during heating, so it is usually calculated, not just the raw THC number
- ·ND means Not Detected at the lab's detection limit, the result you want on contaminant panels
- ·Match the batch or lot number on the COA to the one on your package
- ·A legitimate COA comes from a third-party lab, never from the brand itself
Practical takeaway
At The Highline you can ask a budtender for the COA on any product before you buy. It takes about thirty seconds and tells you potency and safety at a glance. If you ever see a product with no COA, that is a reason to pause. For adults 21+. Effects may vary. Please consume responsibly.
FAQ · Certificate of Analysis
What is a Certificate of Analysis for cannabis?
It is a report from an independent licensed lab that tests a cannabis batch. It lists potency, meaning THC, CBD, and other cannabinoids, and confirms the product passed screening for contaminants like pesticides, heavy metals, mold, and residual solvents.
Are COAs required for cannabis in New York?
Yes. New York's Office of Cannabis Management requires every legal adult-use product to be tested by a permitted lab and carry a Certificate of Analysis for its batch. Products that fail any contaminant test cannot legally be sold in the state.
What does ND mean on a COA?
ND stands for Not Detected. It means the lab tested for that compound and did not find it at or above its detection limit. On contaminant panels like pesticides or heavy metals, ND or Pass is exactly what you want to see.
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