Drug screening: A comparison of urinalysis results from two independent laboratories

Urinalysis for defection of drug abuse is widely used in pre-employment scr eening and correctional administration. Substantial protocols have been dev eloped in these applications of drug testing to minimize the impact of any given vendor on results. Much less documentation exists for epidemiological drug testing programs such as the Arrestee Drug Abuse Monitoring (ADAM) pr ogram. This paper explores the impact that changes in laboratory vendors an d data collection methods have on drug testing results. Here, we report the findings from a comparison study. The project was designed to determine th e consistency of the urinalysis results when the same urine specimens were analyzed by two independent laboratories.