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Test Code THCCU Delta-9-Carboxy-Tetrahydrocannabinol Confirmation and Creatinine Ratio, Random, Urine


Specimen Required


Only orderable as part of a profile. For more information see THCCR / Delta 9-Carboxy-Tetrahydrocannabinol (THC-COOH) Confirmation and Creatinine Ratio, Random, Urine

 

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container Tube: Plastic urine container

Submission Container/Tube: Plastic vial

Specimen Volume: 3 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. No specimen substitutions.

2. STAT requests are not accepted for this test.


Useful For

Measuring the delta-9 carboxy-tetrahydrocannabinol to creatinine ratio as a part of a profile

Method Name

Only orderable as part of a profile. For more information see THCCR / Delta 9-Carboxy-Tetrahydrocannabinol (THC-COOH) Confirmation and Creatinine Ratio, Random, Urine

 

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Reporting Name

THC-COOH/Creatinine Ratio, U

Specimen Type

Urine

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  72 hours

Reject Due To

Gross hemolysis OK
Gross icterus Reject

Reference Values

Only orderable as part of a profile. For more information see THCCR / Delta 9-Carboxy-Tetrahydrocannabinol (THC-COOH) Confirmation and Creatinine Ratio, Random, Urine

 

Not detected (Positive result is reported with a quantitative result)

 

Cutoff concentration by liquid chromatography tandem mass spectrometry:

Delta-9 Carboxy-Tetrahydrocannabinol: 5.0 ng/mL

Day(s) Performed

Monday through Sunday

Report Available

3 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

80349

G0480, if appropriate

LOINC Code Information

Test ID Test Order Name Order LOINC Value
THCCU THC-COOH/Creatinine Ratio, U 19055-3

 

Result ID Test Result Name Result LOINC Value
616334 Delta-9 Carboxy-Tetrahydrocannabinol by LC-MS/MS 20521-1
616335 Carboxy-THC Interpretation 69050-3
616336 THC-COOH/Creatinine Ratio 19055-3