Overview. A specification is a justified set of tests, methods and acceptance criteria used to determine whether a material or product is suitable for its intended use. Cannabis specifications should reflect product type, manufacturing process, route of administration and patient exposure.
From quality target to specification
The process starts with the quality target product profile and critical quality attributes. Tests should be selected because they control a relevant risk, not simply because they appear on a competitor certificate of analysis.
Starting-material specifications
Cannabis starting materials may require botanical identity, cannabinoid profile, moisture, microbiology, pesticides, mycotoxins, elemental impurities and foreign matter. The specification should distinguish agricultural controls from pharmaceutical release controls.
Intermediate specifications
Extracts and bulk oils may require assay, related substances, residual solvents, appearance, density or viscosity. Intermediate limits can support process control and prevent unsuitable material progressing.
Finished-product specifications
Flower products may include identity, assay, cannabinoid profile, water activity, microbiology and contaminants. Oils and capsules may require uniformity, dissolution, fill volume, impurities and packaging-related attributes.
Release versus shelf-life criteria
A product may need tighter release criteria to ensure it remains within shelf-life limits. Stability data should support the relationship between the two.
Method capability and uncertainty
Acceptance criteria should not be set closer than the method can reliably distinguish. Reporting limits, precision and measurement uncertainty should be considered.
Trend limits and internal controls
Internal alert limits may detect deterioration before formal specification failure. These limits should support process understanding rather than replace registered specifications.
Practical reference table
| Product | Typical release tests | Potential shelf-life focus |
|---|---|---|
| Dried flower | Identity, assay, water activity, microbiology, contaminants | Cannabinoid change, moisture and CBN trend |
| Oil | Assay, appearance, impurities, fill volume | Oxidation, precipitation and container interaction |
| Extract | Assay, residual solvent, impurity profile | Chemical degradation and solvent trend |
| Capsule | Assay, uniformity, dissolution, microbiology | Dissolution, shell integrity and assay |
| Spray | Assay, delivered dose, microbial quality | Delivered-dose and in-use performance |
Control and decision path
Frequently asked questions
Can specifications be copied from another product?
No. They must be justified for the specific product, process and market.
What is the difference between release and shelf-life specifications?
Release criteria apply at batch release; shelf-life criteria apply throughout storage.
Should every cannabinoid have a release limit?
Only where its control is scientifically and regulatorily justified.
What is an internal alert limit?
A company-defined threshold used to detect deterioration before a formal specification is exceeded.
How does method capability affect specification setting?
The method must reliably distinguish compliant from non-compliant results around the limit.
Primary references and guidance
- ICH Q6A, Specifications
- ICH Q8(R2)
- ICH Q9(R1)
- EU GMP Part I, Chapter 6
- European Pharmacopoeia, Cannabis flower
- EMA cannabis-derived medicinal product guidance
- ICH Q1A(R2)
- USP General Notices
Confirm the current effective revision and national applicability before operational or regulatory use.