Test Overview
Gas Chromatography / Mass Spectrometry (GC/MS)
Detection of therapeutic and abused drugs. This test is used primarily as a confirmation of a Preliminary Drug Screen, or ordered in combination with the Preliminary Screen as part of the Comprehensive Drug Screen.
Negative
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
1 - 2 days
- Comprehensive Drug Analysis, Urine
- Comprehensive Drug Screen, Urine
- Toxicology Screen, Urine
- Drug Confirmation by GC/MS, Urine
- Drug Screen by GC/MS, Urine
Specimen Requirements
Collect random urine specimen. Refrigerate. Specify drug(s) to be confirmed.
20 mL urine
10 mL urine
Additional Information
Testing by gas chromatography mass-spectrometry (GCMS) detects a broad range of therapeutic and potentially abused drugs including antidepressants, anticonvulsants, sedatives, opiates, and pain medications. Buprenorphine, most benzodiazepines and cannabinoids are not routinely detected by GCMS. For additional guidance on test ordering and interpretation of the results, please consult the Toxicology laboratory 734 936 6758.