How to Read a Cannabis Laboratory Report

A cannabis laboratory report records testing performed on a sample. A certificate of analysis, commonly abbreviated to COA, presents the results and identifies the material to which they apply.

The following examples draw on California’s regulated cannabis testing system. Requirements and report formats can differ between jurisdictions.

Start With the Product and Batch

Before reading individual results, check the product description and batch identification. Compare those details with the information on the package.

A matching brand name is insufficient: different batches carrying the same name can have different test results.

California’s Department of Cannabis Control instructs distributors to confirm that a COA corresponds to the correct batch and that relevant labeling is consistent with the report.

Check the Laboratory and Report Details

Look for the laboratory’s name, the report or sample identifier, and the dates shown. These help identify the document and the testing it describes.

A date printed on a laboratory report should not automatically be treated as the product’s expiration date. Check the label attached to each date, such as sample collection, testing or report issuance.

If information is missing or inconsistent, seek clarification from the laboratory using independently verified contact information.

Read More Than the THC Result

Cannabinoid measurements are one part of a testing report. California’s testing framework also addresses categories such as residual solvents, pesticides, heavy metals, microbial impurities and mycotoxins.

A page showing only cannabinoid percentages does not establish that all applicable contaminant testing has been completed. Review the complete report and its stated testing scope

Pay Attention to Units

A percentage, milligrams per gram and milligrams per package describe different quantities. Read each result together with its unit and the substance being measured.

When a report uses abbreviations or technical terms, consult its legend or ask the laboratory for clarification. Avoid treating an unfamiliar abbreviation as a reassuring result.

What Does a Pass Result Mean?

In California’s system, a COA records whether the batch passes or fails the applicable testing for the reported substances. The result relates to that testing and batch. It is not a general endorsement of every product carrying the same brand name.

Can a COA Prove That Cali Clear Are Authentic?

A COA can provide evidence about the sample and batch it identifies. Establishing that a particular package corresponds to that batch requires additional verification.

A laboratory logo, QR code or screenshot alone does not establish that connection. For any Cali Clears product, check the complete report, its origin and the matching product information before drawing conclusions about what was tested.