Drug Monitoring, Marijuana Metabolite, Quantitative, Urine
Test Code
Clinical Significance
Drug Monitoring, Marijuana Metabolite, Quantitative, Urine - 11-Nor-9-Carboxy-delta 9 -THC (THCCOOH) is commonly accepted as the primary urinary metabolite in man. Detection of this metabolite is indicative of exposure to marijuana. The test is a definitive assay using a specific and sensitive liquid chromatography mass spectroscopy (LC/MS/MS) methodology. Therapeutic urine drug monitoring of THCCOOH is important for ensuring compliance to treatment strategies. Urine or oral fluid are the specimens of choice for routine monitoring of patients taking prescription drugs. Use of serum/plasma should be limited to anuretic patients, or where a patient's clinical ...
Test Resources
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Test Details
If this test code is not ordered with 39158, all medMATCH result codes will be DNR’d.
Methodology
Reference Range(s)
| Marijuana Metabolite | <5 ng/mL |
Alternative Name(s)
Preferred Specimen(s)
3 mL urine
Alternative Specimen(s)
Urine collected in urine collection container
Minimum Volume
2 mL
Transport Container
Clinical drug test transport vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 5 days
- Refrigerated: 7 days
- Frozen: 30 days
Reject Criteria
Preserved samples
Setup Schedule
Refrigerated: 7 days
Frozen: 30 days