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HelpTest Code LAB447 THC GC/MS Confirmation Urine - Covenant Laboratory Only
Department
Send Outs
Reference Lab Test Number
UCTCH
Refer To
Primary Collection Container
Sterile Urine Cup
Transport
Urine Refrigerated
Preferred Transport Temperature
Refrigerated
Processing
Mix well and send 20.0 mL urine in a screw-capped plastic container.
Stability
Room Temperature: 48 hours
Refrigerated: 14 days
Frozen: 14 days
Minimum Testing Volume
8.0 mL
Reference Range
Decision Level: 3 ng/mL
Methodology
Gas Chromatography/Mass Spectrometry
Performed
Monday-Friday
Reported
4 days
CPT Codes
80349 (G0480)
Unacceptable Conditions
Urine catheter cup (with needle)
Additional Information
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.