Urine THC Confirmation -Tetrahydrocannabinol (THC, marijuana) Metabolite, normalized to creatinine

Synonyms

  • LAB12303
  • THC QUANT UR CONFIRMATION
  • THC QuaNT Ur Confirmation
  • THCQNTUR

Cerner Name

THC QuaNT Ur Confirmation

Clinical Info

Detect use of THC, a psychoactive drug

Specimen Sources

Bladder Kidney, Left Kidney, Right Ureter, Left Ureter, Right Urine, Catheter Urine, Clean Catch

Specimen Types

Urine

Specimen Volume

20 ml Random urine (5.0 mL min)

Container

Urine Cntr

Collection Instructions

Container/Tube: Urine transport container
Specimen: 20 ml Random urine (5.0 mL min)
Transport Temperature: Refrigerated
Stability 3 Days Refrigerated
14 Days Frozen

Transport Instructions

Refrigerated

Specimen Stability

Methodology

Gas chromatography/mass spectrometry (GC/MS); Spectrophotometry (SPEC)

Days Performed

TAT 5- 7 Days

Performing Laboratories

Medtox Laboratories, Inc

CPT

80349
82570

PDM

5960085

Results
Component Name Base Name Common Name External Name
CANNABINOIDS (THC) UR QUANT CANNABINOID CANNABINOIDS THC UR QUANT Cannabinoids (THC) Ur QuaNT
CARBOXY THC UR QUANT CARBOXTHCUR CARBOXY THC UR QUANT Carboxy THC Ur QuaNT
THC (MARIJUANNA) METABOLITE UR THCMTUR THC MARIJUANNA METABOLITE UR THC (Marijuana) Metabolite Ur
THC CREATININE UR THCREAT THC CREATININE UR THC Creatinine Ur
THC METABOLITE/CREAT UR THCMETCREAT THC METABOLITE CREAT UR THC Metabolite/Creat Ur

Result Interpretation

THC usage ratio = THC MTB, ug/gm creat, later specimen ------------------------------------ THC MTB, ug/gm creat, earlier specimen
 
Note: Specimens must be collected a minimum of 24 hrs apart. THC usage ratio >0.5 as predictor of new marijuana use: Prediction accuracy = 85.4% False positives = 5.6% False negatives = 8.6% THC usage ratio >1.5 as predictor of new marijuana use: Prediction accuracy = 74.2% False positives = 0.1% False negatives = 27.0% (Huestis Ma and Cone EJ, National Institute of Health)
 
Note: MEDTOX recommends making comparisons on specimens collected at one week intervals or longer. This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration

Forms
Tox/TDM LAB12303 build edit