Université de Fribourg

THCCOOH concentrations in whole blood: Are they useful in discriminating occasional from heavy smokers?

Fabritius, Marie ; Favrat, Bernard ; Chtioui, Haithem ; Battistella, Giovanni ; Annoni, Jean-Marie ; Appenzeller, Monique ; Dao, Kim ; Fornari, Eleonora ; Lauer, Estelle ; Mall, Jean-Frédéric ; Maeder, Philippe ; Mangin, Patrice ; Staub, Christian ; Giroud, Christian

In: Drug Testing and Analysis, 2013, vol. 6, no. 1-2, p. 155–163

Some forensic and clinical circumstances require knowledge of the frequency of drug use. Care of the patient, administrative, and legal consequences will be different if the subject is a regular or an occasional cannabis smoker. To this end, 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (THCCOOH) has been proposed as a criterion to help to distinguish between these two groups of users. However, to...