U rinalysis is the main laboratory testing vehicle Addiction Professionals utilize to determine whether or not a patient is using drugs and/or alcohol. To the uninitiated, an Addiction Professional only looks at a toxicology result through a binary lens: negative, or positive. True clinicians know that toxicology is much more complex than that. This article is just one example. Let's dig in: Let's suppose that a patient is suspected of having used cocaine recently because their urinalysis results showed positive for the substance. That's simple enough. However, their results also show them being positive for benzoylecgonine which is one of the 11 metabolites of cocaine. But how can that be? How can the patient be positive for both cocaine and a metabolite of cocaine at the same time? You look at the patient's toxicology history and see that this never happened with this patient before. This has to be some kind of false positive, right? And, after all, the metabolite i...