How to Read Hemp and CBD Lab Reports
Every trustworthy hemp product has a certificate of analysis — a COA — behind it. Most shoppers never look at one, which is exactly what low-quality brands count on. Reading a COA takes about two minutes once you know where to look. Here's the walkthrough, using the same reports we publish for products at Canni.
What a COA Is
A certificate of analysis is a lab report from a third-party testing facility — not the manufacturer — stating what a specific batch of product contains. For hemp products, that means measured cannabinoid content and, in fuller panels, screening for contaminants like pesticides, heavy metals, and residual solvents.
"Third-party" is the key phrase. A brand testing its own products is grading its own homework. An independent lab has no stake in the result.
The Five Things to Check
1. The cannabinoid table. This is the core of the report. It lists each cannabinoid (CBD, Delta-9 THC, CBG, CBN, and others) with its measured concentration. Match this against the label: a gummy claiming 25 mg of CBD should show roughly that per serving in the report.
2. Delta-9 THC content. For hemp compliance, total Delta-9 THC must be at or under 0.3% by dry weight. For psychoactive products, this number also tells you the actual strength — which matters more than the marketing.
3. Batch and lot numbers. A COA applies to one production batch. The batch number on the report should match the one printed on your product's packaging. A generic COA with no batch match is close to worthless.
4. The lab's name and date. A real report names the laboratory, carries a date, and usually includes an ID you can verify with the lab directly. Old reports are a yellow flag — batches change.
5. Contaminant panels, if included. Fuller reports show pass/fail results for pesticides, heavy metals, microbials, and solvents. Not every COA includes these, but their presence signals a brand spending real money on testing.
Red Flags
- No COA available at all, or "it's coming."
- A report with no batch number, no lab name, or no date.
- Label claims that don't match the measured cannabinoid content.
- A brand that only shows potency and never contaminant screening, on every product, forever.
- QR codes that lead to a homepage instead of an actual report.
Where Canni's Reports Live
We publish COAs for the products we carry at our testing and COAs page, and staff at 810 S 5th St in Walker's Point can pull up the report for anything on the shelf while you're standing there. That applies across the CBD collection and the Delta-9 collection.
FAQ
What is a certificate of analysis? A third-party lab report stating the measured contents of a specific product batch — cannabinoid levels and, in fuller panels, contaminant screening.
How do I check if a CBD product is lab tested? Look for a COA with a batch number matching your product, a named lab, and a date. Reputable sellers publish these or show them on request.
What should Delta-9 THC show on a hemp COA? At or under 0.3% by dry weight for hemp compliance. Psychoactive hemp products list their actual Delta-9 content per serving as well.
Do all hemp products have lab reports? No — and that's the point. Products without them are the ones to skip.
See real examples at our testing and COAs page, or ask staff to walk through one in person.
FDA Disclosure: These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.