Abstract

Models for detecting different kind of drugs (including alcohol) in the human body will be proposed and studied from the point of view of the designing the best experimental framework for estimating the model parameters. Especially derived from the compartmental-model approach, different variations, such multiple doses at different times will be analyzed and compared with existing bibliography
Later on, using these models, a procedure for estimating the quantity of drug of an individual in a past time from one or more observations taken at the present time will be proposed and discussed. In the case that the estimation could lead a punitive situation for the person, a conservative procedure for deciding whether or not the individual should be punished will be proposed, always aiming a balanced situation between the need to pursue drug consumption and the presumption of innocence.