Urine analysis is primarily used thanks to its low value. water drug testing is one in all the foremost common testing strategies used. The enzyme-multiplied immune take a look at is that the most often used qualitative analysis. Complaints are created concerning the comparatively high rates of false positives victimisation this take a look at. Urine drug tests screen the water for the presence of a parent drug or its metabolites. the amount of drug or its metabolites isn't prophetic of once the drug was taken or what proportion the patient used. Rather, it's merely a validating report indicating the presence of the parent drug or its metabolites. Urine drug testing is associate immunochemical assay supported the principle of competitive binding. medicine which can be gift within the water specimen contend against their individual drug conjugate for binding sites on their specific protein. throughout testing, a water specimen migrates upward by capillarity. A drug, i...