Last updated on: 6/17/2008 12:40:00 PM PST
What Are the Testing Methods to Determine Marijuana Use, and What Is the Length of Time Marijuana Can Be Detected by Those Tests?
General Reference (not clearly pro or con)
Some medical cannabis users have encountered drug testing for employment, school, traffic incidents, legal requirements, etc. In some cases, having medical approval for marijuana is accepted, in others, it is not.
While some tests seek to determine if the "parent drug" is in the system (such as THC), others test for drug metabolites 1, which are produced by the body's chemistry after a drug is ingested. This can present problems for some patients who test positive for THC metabolites, yet they may not have used marijuana for several weeks.
When medical use is not accepted by authorities, some patients may be vulnerable to arrest and sanctions depending upon the outcome of these drug tests. The following chart examines the four testing methods currently in use, and what that may mean to medical marijuana patients.
Aug. 24, 2005