GREENCHILL · SWISS CBD GUIDE
Understanding a CBD / THC analysis: levels, batch, method and certificate
A CBD/THC analysis is only useful if you know how to read the batch, sample, method, units and laboratory limits. This page explains HPLC, GC, CBD/CBDA, THC/THCA, mg/g, percentages, LOD/LOQ and why a certificate must remain linked to the product it represents.
Informative guide. GreenChill describes products, their composition, formats and conditions of use without therapeutic or medical promises.
KEY POINTS
The essentials in 30 seconds
The batch must match
A certificate is only meaningful for a product if it can be linked to the batch actually sold.
HPLC and GC do not read exactly the same thing
The preparation and heat involved in some methods affect how acidic and neutral forms are observed.
1 % = 10 mg/g
For a mass concentration, 1 % corresponds to 10 milligrams per gram.
LOD ≠ LOQ
The detection limit indicates what can be detected; the quantification limit indicates what can be measured reliably.
GUIDE CONTENTS What would you like to know? VIEW CONTENTS ↓
COMPARE
Read a certificate in 30 seconds
| Element | What it means | What to check |
|---|---|---|
| Batch | Production identifier. | Must match the product sold. |
| Method | HPLC, GC, LC-MS… | Understand what is measured. |
| Unit | %, mg/g, mg… | Do not compare different units. |
| LOD / LOQ | Analytical limits. | Distinguish detection from quantification. |
| Total CBD/THC | Value calculated according to a convention. | Read the laboratory's formula or note. |
Batch
What it means : Production identifier.
What to check : Must match the product sold.
Method
What it means : HPLC, GC, LC-MS…
What to check : Understand what is measured.
Unit
What it means : %, mg/g, mg…
What to check : Do not compare different units.
LOD / LOQ
What it means : Analytical limits.
What to check : Distinguish detection from quantification.
Total CBD/THC
What it means : Value calculated according to a convention.
What to check : Read the laboratory's formula or note.
CHOOSING A PRODUCT
Which part of the certificate would you like to understand?
Start with the batch, method or results.The certificate must be traceable to the actual product.
The technique affects how cannabinoids are read.
%, mg/g, LOD and LOQ change the meaning of a number.
3 PITFALLS
The most common interpretation errors
Traceability links the document to the product.
Every analysis has its own limits.
Total CBD and total THC must follow an explicitly stated convention.
FAQ
Frequently asked questions
What does 1 % CBD mean in mg/g?
For a mass concentration, 1 % corresponds to 10 mg/g.
Why does my analysis show CBD and CBDA separately?
Because they are distinct neutral and acidic forms that methods such as HPLC can measure separately.
What does < LOQ mean?
The substance may be present, but below the method's reliable quantification limit.
Is a certificate without a batch number sufficient?
It is much less useful for linking the result to the product actually sold.
Does an analysis prove that a product is legal?
It can provide important data, particularly THC, but compliance also depends on the category, labelling and other requirements.
VERIFICATION
References on cannabinoid analysis
YOUR FEEDBACK
We value your feedback
Was this guide helpful?
A quick rating helps us make our guides clearer and more useful.
A comment, question or suggestion?
Have a comment, question or suggestion? Write to us. Useful questions may be added to our guides after review.
AFTER THE GUIDE