Dr. Howard Smith Oncall

Vidcast:  https://youtu.be/kj8WxgQ-ZS4   If you smoked or ate some weed over the weekend, will you flunk that pop drug test your boss springs on you Monday morning?  The answer depends on how much you consumed and the type of test you must take.  Either way, be forewarned that marijuana’s psychoactive agent, THC, is fat-soluble and definitely hangs around in your body longer than alcohol.   Smoking one isolated marijuana cigarette yields a positive test for 3 days.  If you smoke 3 or 4 times a week, you’ll fail a test up to a week later.  If you smoke everyday for awhile, you will test positive for at least a month after quitting.   The most sensitive marijuana test is hair analysis, and with it THC detection can occur up to 3 months after stopping any use.  Next sensitive is the urine test that detects use 3 to 30 days after cessation.   Saliva tests may be positive for 24 hours.  Blood tests only pick up THC for 3-4 hours after use.   If your job depends on a negative unannounced drug test, you’d better thi