Once the lab receives the sample, if no drugs are detected, the result will report out to you within an average of 24 hours. If drugs are detected in the sample, it will go through a secondary gas chromatography/mass spectrometry (GC/MS) screening process, which typically takes an additional 24 hours. If the secondary test is needed but comes out negative, you will have the results in an average of 48 hours from the time the specimen was collected. If the secondary testing is necessary and confirms a positive result, the drug screen report will go the the Medical Review Officer (MRO) who will then contact the donor to determine if the result was due to a prescription medication. This MRO process can take anywhere from a few hours to a day or more, depending on how responsive the donor is.

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