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Quality · documentation
How to read a COA: what does it actually show?
A Certificate of Analysis is a laboratory report. It is useful only when product, batch, date, method, units and results clearly belong together. It does not automatically prove every quality or safety aspect.
In brief
Read unit, method and report date together.
“Not detected” depends on detection and quantification limits.
| Item | Check | Why |
|---|---|---|
| Identity | product and batch | avoids attaching another sample |
| Date | sample and report date | shows context |
| Method | technique and scope | defines what was tested |
| LOD/LOQ | reporting limits | explains ND and low results |
| Unit | %, mg/g, mg/ml or other | prevents false comparison |
Five checks before the result
- product or sample description;
- batch or lot number;
- laboratory and report date;
- method and unit;
- LOD, LOQ or reporting limits.
Not detected is not absolute zero
A laboratory reports within the limits of its method. ND normally means not detected above a stated limit.
What a COA does not prove by itself
A cannabinoid profile does not automatically cover microbiology, pesticides, heavy metals, stability, labelling or individual suitability.
Sources and boundaries
Good Nature Vibe
This page helps you read product information. It is not medical, health or dosage advice. The current product specification, sales status and applicable law remain decisive.
FAQ
Frequently asked questions
Does a COA mean everything was tested?
No. It covers only the listed analyses and sample.
What are LOD and LOQ?
LOD is the detection limit; LOQ is the level above which a value can be quantified under the method.
Can I compare two COAs?
Only carefully when product matrix, method, unit and limits are comparable.
Why is there no COA for every product?
We show a document only when it is available, relevant and linked to the product or batch.