False-Positive LSD Testing in Urine Samples from Intensive Care Patients
Journal of Analytical Toxicology September 1, 1998 J. Röhrich, Siegfried Zörntlein, Johannes Lotz et al. 25 citations
Unexpected positive results for lysergic acid diethylamide (LSD) were found in urine samples from 12 patients in an intensive care unit in a routine screening using the CEDIA DAU assay. None of these test results could be confirmed by high-performance liquid chromatography analysis, but all samples contained the mucolytic drug ambroxol. Further studies demonstrated that ambroxol exhibits a...