[Detection of lysergic acid diethylamide in human urine: elimination, screening and analytical confirmation].

The Coat-A-Count DPC and Roche Abuscreen RIA for LSD were used to search for LSD in urines containing various drugs commonly found in specimens from addicted groups. Elimination of LSD in urine of a volunteer after ingestion of 50 micrograms confirmed that LSD can be detected after 3 days at 0.1 ng/ml cut-off level. Chromatographic conditions were restudied and the full spectrum of trimethylsilyl LSD at 0.125 ng with ion trap GC-MS (ITS40) was shown.