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, Lee KC, Kissack JC. Urine drug screening: practical guide for clinicians. Mayo Clin Proc. 2008 Jan;83(1):66-76. doi: 10.4065/83.1.66. Erratum in: Mayo Clin Proc. 2008 Jul;83(7):851. PMID: 18174009.
Contributed by: Vincent Gao, Pharm D candidate
Posted in Question Of The Day