Urine drug screen

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Urine sample

Drug screen - urine

No drugs in the urine.

If the test result is positive, it is helpful to confirm the results with gas-chromatography mass spectrometry (GC-MS). In some case, a test will register a false positive. This can result from interfering factors such as some foods, prescription medications and other drugs. The GC-MS will help to eliminate some of the other possibilities.

Review Date: 01/16/2007
Reviewed By: Eric Perez, MD, Department of Emergency Medicine, St. Luke's-Roosevelt Hospital Center, New York, NY. Review provided by VeriMed Healthcare Network.