A 24-year-old male asked:
i took a trazadone and i've heard it can cause a false positive for urine screens, i only took 50mg. how long before it's out of my urine completely?
1 doctor answer
Dr. Jessica Allan answered
23 years experience Internal Medicine
5 x its half life: A drug is considered gone after about 5 half lives. Trazodone has a biphasic elimination with a redistribution of about one hour and an elimination of half-life of 10-12 hours. To be safe I would wait at least 50 hours and hydrate well before taking the urine drug test. Use of trazodone a triazolopyridine antidepressant can yield a false positive amphetamine result.
Answered on Aug 20, 2015
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