A Technical Specifications Manual Can Make Cannabis Testing Data More Defensible
Reliable cannabis testing begins before a sample reaches the laboratory. A well-designed Technical Specifications Manual (TSM) gives a company and its contracted laboratory a shared, written definition of what the analysis must deliver—and how that performance will be evaluated.
Shannon Swantek, a senior quality chemist at Environmental Standards and Vitale Scientific Associates, describes the TSM as a practical tool for translating a client’s needs into laboratory requirements. The document should clarify the sensitivity, precision and accuracy expected for each type of test rather than leaving those decisions to informal discussions or assumptions.
What a cannabis testing TSM should include
A TSM should be tailored to the project, product and intended use of the data. Depending on the testing program, it may specify:
- Approved analytical methods or acceptable method alternatives
- Detection and reporting limits
- Required quality-control samples and recovery criteria
- Method-validation and verification requirements
- Sample handling, preservation and holding-time expectations
- Data-reporting formats and required qualifiers
- Turnaround times and procedures for communicating delays or failures
These details are especially important for cannabis because products can vary widely in composition and matrix. A method that performs adequately for dried flower may require different preparation, validation or quality-control requirements when used for concentrates, edibles or other finished products.
Turning laboratory requirements into something clients can assess
One of the TSM’s main advantages is that it gives clients a basis for evaluating laboratory performance without requiring them to interpret every chromatogram or understand every instrument setting. The client can compare the laboratory’s reports and quality records against agreed requirements, including whether the laboratory met the specified reporting limit, completed the required quality-control checks and delivered results within the expected timeframe.
A TSM is not a substitute for technical expertise or regulatory compliance. It is a management and communication tool that helps define the scope of the work. Its value increases when it is used alongside a third-party laboratory audit and an independent review of the analytical data.
Why quality control and data review matter
Quality-control results provide evidence that an analytical system was operating properly when a batch was tested. Common checks include blanks to identify contamination, duplicates to evaluate precision, calibration checks and fortified control samples to assess recovery. The U.S. Environmental Protection Agency’s quality-assurance guidance explains that laboratory control samples help demonstrate whether the overall analytical process is performing as expected, while matrix-spike results can reveal problems associated with the sample itself.
For cannabis programs, those checks should be reviewed as part of a broader data-validation process. A reported result may appear plausible but still require qualification if, for example, a blank shows contamination, a control sample falls outside its acceptance limits or duplicate results show excessive variability. Data validation helps determine whether a result is suitable for its intended purpose—not simply whether a number appears on a certificate of analysis.
Swantek’s experience with the Oregon Environmental Laboratory Accreditation Program also reflects the importance of formal laboratory oversight. Oregon’s early work establishing cannabis testing requirements included input from laboratory-accreditation personnel and public-health officials, as documented in the Oregon Health Authority’s technical report on cannabis contaminant testing.
A practical foundation for trust
As cannabis testing programs become more sophisticated, written specifications can help producers, processors, brands and laboratories work from the same expectations. A TSM does not guarantee accurate data on its own, but it makes performance measurable: methods can be compared, quality failures can be investigated and reporting practices can be evaluated consistently.
Used with laboratory audits, method validation and careful review of quality-control records, the manual can turn testing from a transactional service into a documented quality process. That added structure helps companies make better decisions about their products and gives regulators, investors and consumers more confidence in the data behind cannabis safety and potency claims.
