Cannabis Drug Test Cut Off Levels for Work
What are Cut Off Levels?
Cut off levels in cannabis drug tests refer to the minimum concentration of THC (tetrahydrocannabinol) that must be detected in a sample to indicate cannabis use. These levels vary by test type and jurisdiction.
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Standard Cut Off Levels
- Urinalysis: Typically set at 50 ng/mL to 100 ng/mL.
- Saliva tests: Generally at 10 ng/mL to 25 ng/mL.
- Hair follicle tests: Often at 15 ng/mL to 30 ng/mL.
Implications for Employment
High cut off levels can lead to false positives, affecting employment decisions. Employers must consider the timing of use and the test's sensitivity.
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Factors Influencing Cut Off Levels
- THC metabolism rates vary among individuals.
- Frequency of cannabis use can impact detection times.
- The type of cannabis product used can affect THC levels.