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Review of Case Materials
Reviews records, documents, testimony, data, and other relevant materials and consults with counsel regarding technical issues related to the matter.
Provide Expert Analysis
Applies specialized knowledge and experience to evaluate the technical or professional issues involved.
Form Expert Opinions
Develops independent, supportable opinions based on the available evidence and relevant standards.
Prepare Expert Reports
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Relevant materials may include certificates of analysis, chromatograms or other analytical outputs, laboratory methods, sampling records, batch and production documents, cultivation records, extraction or formulation records, product specifications, labels, photographs, and chain-of-custody documentation. Together, these materials can help determine what was tested, how the sample was obtained, which method was used, and whether the reported result corresponds to the product or batch in dispute.
Testing may be used to measure compounds such as THC, CBD, and other cannabinoids in plant material, extracts, or finished products. An expert may examine the analytical method, sample preparation, calibration, quality-control data, detection or quantitation limits, and measurement uncertainty before interpreting the reported concentration. Cannabis testing is sensitive to analytical methodology and sample preparation. NIST has developed cannabis reference materials and quality-assurance resources specifically to improve comparability and reliability of cannabinoid measurements among laboratories.
The expert can compare the labeled cannabinoid amount with certificates of analysis, underlying laboratory data, batch information, production specifications, and the analytical method used. Sampling differences, product heterogeneity, moisture, storage conditions, test methodology, and measurement uncertainty may need to be considered before deciding whether two reported results actually conflict. For hemp production compliance testing under USDA's Domestic Hemp Production Program, for example, laboratories must use appropriate validated methods and report measurement uncertainty when determining total THC concentration.
The chemical and physical characteristics of a cannabis product can be influenced by the plant material used and by subsequent harvesting, drying, extraction, formulation, or other processing steps. Records from those stages can help trace when a change in composition, contamination, concentration, or batch consistency may have occurred. When the principal dispute concerns cultivation science rather than the resulting cannabis product, Horticulture expertise may also be appropriate.
Cannabis, +4
Cannabis
Prepares clear, well-supported expert reports outlining methodology, analysis, findings, and opinions.
Provide Deposition Testimony
Explains findings and opinions under oath and responds to questioning during deposition testimony.
Testify in Court
Presents specialized findings and opinions clearly to judges, juries, arbitrators, or other decision-makers.
The central question determines the specialty. A Cannabis Expert Witness may be appropriate for cannabis products, cultivation and processing records, cannabinoid testing, and cannabis-industry evidence. Analytical Chemistry may be more appropriate when the validity of a laboratory method is the central issue. Pharmacology can address drug action and disposition, while Toxicology may be needed for exposure, impairment, toxicity, or causation questions.
