Lakeland Health Care

Occupational Health and Safety for a Drug Free Workplace

About oral drug tests

Posted by lakelandhealthcare on December 13, 2011 at 3:45 PM

Saliva / oral fluid-based drug tests can generally detect use during the previous few hours to 1–2 days. THC may only be detectable for less than 12.0 hours in most cases. Detection in saliva tests begins almost immediately upon use of the following substances, and lasts for approximately the following times:

Alcohol: 6–24 h[12]

NOTE: Saliva tests are poorly sensitive to THC and detection times can vary considerably based on the cutoffs used. In some cases drug use may only be detectable for a few hours.

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