DUID: Oral Fluid and Blood Confirmation Compared in Belgium

The objective of this study was to compare the number of drivers with drug concentrations above the legal cutoffs for driving under the influence of illicit substances in paired samples of blood and oral fluid. Between January 2008 and September 2009, 2,949 randomly selected drivers participated in a roadside survey. Each was asked to provide blood and oral fluid. Samples were analyzed for 11 illicit substances or metabolites by ultra-performance liquid chromatography–tandem mass spectrometry and gas chromatography–tandem mass spectrometry. Out of the 2,750 drivers who gave both blood and oral... Mehr ...