What does “Preliminary Positive” mean?

Using a urine drug test cup or saliva drug test device is only the first step in the drug testing process. These drug tests screen for the presence of drugs; however, they do not provide laboratory-confirmed results unless required. In rare circumstances, it is possible to obtain false positive drug test results despite a donor’s proclaimed sobriety. Some over the counter medications, e.g. Ibuprofen, and even some foods, e.g. poppy seeds, may trigger specific drug test panels to yield positive findings. All preliminary positive drug test results can go through a certified Medical Review Officer (MRO) for analysis under a CLIA-Waived laboratory setting. The MRO will be able to provide an explanation for a person’s legitimate drug use or possible contraindicating food intake.