How to Read a Cannabis Lab Report (COA) in 5 Minutes
How to Read a Cannabis Lab Report (COA) in 5 Minutes
A certificate of analysis looks intimidating, but five checks cover everything a shopper needs.
The five checks
- Match: does the COA batch number equal the package batch code?
- Date: was it tested within the last year?
- Potency: does total THC line up with the label within ~10%?
- Pass/fail lines: pesticides, metals, microbials all marked pass or ND (not detected)
- Lab: is it an accredited independent lab (ISO 17025)?
Red flags in a COA
- Blanket ‘pass’ with no numbers
- Potency wildly above label claims (marketing labs exist)
- Missing panels for solvents on extracted products
- No lab name or accreditation
Quick answers
What is ND on a lab report?
Not detected – the compound is below the instrument’s detection limit; a good sign.
Do COAs expire?
They describe one batch at one time; use-by windows still apply to the product itself.
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This article is for informational purposes only, for adults (18+). Cannabis laws differ by country – always follow the rules where you are and use responsibly.
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Ready to buy? This article relates to our vape pens, cartridges and CBD ranges. Cannabinoid content is stated on each listing; see our guide to UK THC law before you order.
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Adults 18+ only. This article is general information, not medical advice. Our products are not intended to diagnose, treat, cure or prevent any disease. If you have a health condition, are pregnant or breastfeeding, or take medication, speak to a qualified healthcare professional before using any cannabinoid product.
