For the practitioners of forensic toxicology, the analysis of tetrahydrocannabinol (THC) and its metabolites is one of most requested tests around the world in drugs and driving related cases. By evaluating the concentrations of THC, its hydroxy and carboxy metabolites in samples of whole blood, the toxicologist is in the best position to offer medical examiners/coroners and enforcement agencies the most appropriate interpretation regarding the impairment of the operators of motor vehicles.
In an article published by Wendy M. Bosker and, Erin L. Karschner et al in PLOS ONE ( January 2013, 8(1): e53127), a team from the prestigious National Institute on Drug Abuse (NIDA, Baltimore MD)/ Maastricht University, Maastricht, The Netherlands studied the psychomotor functions of chronic daily cannabis users in abstinence. In this study, samples of blood, as well as oral fluid, were taken over a period of 23 days. The blood samples were treated so as to produce the plasma and were stored until analyzed. During the period of the study several psychomotor tests were performed upon the participants. By correlating the plasma cannabinoid concentrations with the psychomotor results, this team was able to understand the nature of cannabinoid impairment. UCT's SPE columns were employed to provide analytical results which were both reproducible and clean.
In an article published by Wendy M. Bosker and, Erin L. Karschner et al in PLOS ONE ( January 2013, 8(1): e53127), a team from the prestigious National Institute on Drug Abuse (NIDA, Baltimore MD)/ Maastricht University, Maastricht, The Netherlands studied the psychomotor functions of chronic daily cannabis users in abstinence. In this study, samples of blood, as well as oral fluid, were taken over a period of 23 days. The blood samples were treated so as to produce the plasma and were stored until analyzed. During the period of the study several psychomotor tests were performed upon the participants. By correlating the plasma cannabinoid concentrations with the psychomotor results, this team was able to understand the nature of cannabinoid impairment. UCT's SPE columns were employed to provide analytical results which were both reproducible and clean.
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