Medically reviewed by Mary Choy, PharmD Key Takeaways THC detection times vary by test type, lasting up to 12 hours in blood, 24-48 hours in saliva, up to 30 days in urine (on the longer side with ...

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 breathalyzer ...

BOULDER, Colo. (KKTV/Gray News) – Researchers at the University of Colorado Boulder are trying to develop a breathalyzer that would track marijuana impairment levels in real-time. Although it has been ...

The two main compounds in cannabis are in a constant balancing act. This is an Inside Science story. (Inside Science) -- Many people who use cannabis do it for the euphoric effects caused by the main ...