Historical QOD 10/29/08: Name common medications responsible for phencyclidine false-positive results on urine drug screen immunoassays.
Common medications causing phencyclidine false-positives include dextromethorphan, diphenhydramine, ibuprofen, ketamine, meperidine, tramadol, venlafaxine, imipramine, and doxylamine.
Moeller KE, et al. Urine drug screening: practical guide for clinicians. Mayo Clin Proc. 2008 Jan;83(1):66-76
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