A 24-year-old male asked:
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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
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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Related questions:

A 24-year-old male asked:
Dr. Jeffrey Juchau
33 years experience Family Medicine
Trazodone: This medication can cause false positives in urine drug screens but not in confirmatory testing. If you have a prescription for this or any other med ... Read More
A 30-year-old male asked:
Dr. M. Hytham Beck
43 years experience General Surgery
Yes: how long depend on the dose, and how long you have been taking it. yes it will show as a false positive in the drug screen urine test.
2
2 thanks
A 21-year-old female asked:
Dr. Diane Minich
37 years experience Family Medicine
Not usually: Screened for on a drug test.
2
2 thanks
A 42-year-old female asked:
Dr. Alan Wartenberg
A Verified Doctor answered
A US doctor answered Learn more
Is it prescribed?: Trazadone is generally a safe drug WHEN IT IS PRESCRIBED for you by a doctor who knows your health history and has done an appropriate evaluation. I ... Read More

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