Variance/allowable error is the acceptable range of deviation in lab testing results for cannabis products.
Also called / Category
Precision error, offset-4 transition-colors hover:underline" title="Learn more about Tolerance">tolerance / Lab Testing & QA/QC
Key takeaways
- Variance indicates the consistency of lab results.
- It affects product labelling accuracy.
- Understanding variance helps consumers trust product quality.
What it is / How it shows up
Variance or allowable error is often seen on Certificates of Analysis (COAs) for cannabis products. It represents the permissible range of deviation in lab testing results. For example, a THC content labelled as 20% with a 5% variance means the actual THC content can range from 19% to 21%. This ensures that minor discrepancies between different lab results do not mislead consumers about the product's potency or content.
How it’s measured or identified
- Calculated as a percentage of the target value.
- Defined by industry standards and regulations.
- Reported on Certificates of Analysis.
Use in context
- “The variance in this batch’s THC level is within the allowable limits.”
- “Check the COA for the variance details on CBD content.”
- “Understanding variance helps you know what to expect from your product.”
Safety & compliance in Canada
- Health Canada sets standards for variance in cannabis testing.
- Products must comply with allowable error limits to be legally sold.
Related terms / See also
FAQs
- What does variance mean in cannabis testing?
Variance refers to the accepted range of deviation in lab test results, ensuring that minor differences don't mislead consumers about product content. - Why is variance important?
It ensures product consistency and accuracy in labelling, helping consumers trust the quality and potency of cannabis products. - How is variance determined?
Variance is determined by industry standards and regulations, often expressed as a percentage of the target value on COAs.
Sources
- Health Canada
- PubChem