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How long does fentanyl stay in your system?

Several testing assays may be used to detect fentanyl in your system. Urine screening may detect fentanyl anywhere from 24 to 72 hours after last use. Norfentanyl—a metabolite—may be detectable for an additional 24 hours, or 96 hours after the last use. Hair strands may test positive for fentanyl for a much longer timeframe, on the order of several months.

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Editorial Staff
Editorial Staff, American Addiction Centers
The editorial staff of Desert Hope Treatment Center is comprised of addiction content experts from American Addiction Centers. Our editors and medical reviewers have over a decade of cumulative experience in medical content editing and have... Read More