Marijuana stays in the body for days to weeks, depending on how often someone uses it. Learn about urine and hair detection ...

The agency is looking into a new oral fluid test to quickly determine if someone was driving under the influence of marijuana. The test is a mouth swab that will make it easier to collect samples ...

Police may perform saliva testing for roadside testing ... Yes, delta-8 THC will probably still test positive for THC use. So, although delta-8 may technically not be illegal where you are ...

For decades, police have used breathalyzers to test for alcohol, but they don’t have a reliable tool to measure marijuana use. That could change soon. Researchers are working to develop a ...

Drug testing for marijuana has never been an exact science. There is no consensus on what level of marijuana in the bloodstream ...

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