The reliability, validity and accuracy of drug test results needs to be known prior to using a test. Specificity and sensitivity must be known prior to using a test on any population. This should go without saying as to do anything else would be irresponsible and careless.
Source: Diagnostic Testing 101.1: The Importance of Sensitivity, Specificity and Diagnostic Test Accuracy
Disrupted Physician 
It’s important for drug test results to be reliable, valid, accurate.
LikeLike