Quick tests are devices that give an instant result. These are usually dip cards or cups and are very similar to a home pregnancy test. Lab-based urine drug tests are collected and shipped overnight to the lab. An initial screen of the specimen is conducted and if no drugs are present, the results are released. All specimens identified as positive on the initial screening test are confirmed using gas chromatography/mass spectrometry (GC/MS). If the specimen does not confirm positive, test results are released. If the specimen confirms positive, the result is forwarded to a Medical Review Officer (MRO) who will make a final determination after interviewing the donor and examining any proof provided (prescriptions). Breath Alcohol Tests (BAT) provide immediate results.