THC, URINE, CLINICAL, GC/MS CONFIRMATION (QUANTITATIVE)

Components
Also see Drug Abuse Screen, Urine Panels with GC/MS confirmations. GC/MS confirmation for 11-nor-9-carboxy-delta-9-THC. Includes a urine creatinine and ratio of THC metabolite to creatinine. This ratio is the best indicator of continued drug use when compared to previous values on the same patient.

Specimen Required
Collect random urine. Mix well and send 20.0 mL urine (6.0 mL minimum) refrigerated in a screw-capped plastic urine container.

Methodology
Gas Chromatography/Mass Spectrometry

Stability
Room Temperature: 48 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Decision Level: 3 ng/mL

Performed
Monday-Friday

Turnaround Time1-2 days
Test CodeUTHGL
CPT-4 Code (s)
80349 (G0480), 82570
LOINC Codes
THC/Creatinine   13478-3  
THC Confirm   20521-1  
Creatinine, Urine   2161-8  

Warde
Medical
Laboratory