How to read a certificate of analysis (COA)
Updated 2026-07-11
Why the COA is decisive
A certificate of analysis (COA) attests to a lot's real rates, measured in a laboratory. In B2B, it's the document that protects your customs compliance and your resale.
Fields to check
- CBD level: the lot's commercial value.
- THC level: the regulatory threshold — it must respect your delivery country's limit.
- Date and laboratory: a recent COA, issued by an identified lab.
- Lot number: it must match the offered lot exactly.
Best practice
Always compare the declared rate to the measured rate. On Canna-Tech, "Hub-controlled" lots show a rate verified on entry to our Swiss logistics hub.
Read next
Sourcing & pricing
Photo charter: nailing the macros of your lots
White background, tight framing, high resolution: the rules for sharp, compelling lot photos.
Sourcing & pricingMOQ and degressive pricing: optimise your volumes
Understand the minimum order quantity and the discount tiers to buy at the best cost.
THC thresholds & legalTHC thresholds in Europe: what a buyer needs to know
The THC level is the #1 cross-border risk. An overview of thresholds and best practice.
Informational content, not legal advice — an evolving situation, to be validated by a lawyer.