Can foods and prescription medications interfere with the test?
Some foods contain or produce chemicals in the body that may cause a positive drug test. Lab. personal “cutoff” levels, or allowable thresholds that recognize the possibility of food interaction. If a test falls below the threshold, the result is reported as negative. Certain prescription medications may lead to initial false positive readings during EMIT screening. During the GC/MS confirmation process, it will be able to accurately determine if a medication has caused the initial positive reading. In addition, all positive results are reviewed by an on staff toxicologist and an independent Medical Review Officer (MRO). Both the toxicologist and the MRO are able the determine if a medication could have caused a positive reading.
