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Cannabinoids Screen, Urine

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Screen:  Kinetic Interaction of Microparticles in Solution (KIMS) 

 

Testing Algorithm:

Samples containing greater than 50 ng/mL of delta-9-THC-COOH or other cross-reacting substances are reported as screen positive, presumptive.  Results are presumptive for medical purposes only.

 

Literature Reference:

Cannabinoids II (THC2) package insert, Roche Diagnostics.

Specimen Requirements

Specimen Type: Urine, random

Container/Tube: Yellow-top urine collection tube or plain red-top tube (full)

Specimen Volume: 10 mL

Collection Instructions: No additive.

Additional Information: See Urine Collection in Special Instructions for additional information.

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:
STAT: Screening result available 1 hour after receipt in laboratory.

Routine: Screening result available 3 hours after receipt in laboratory.

Test Classification and CPT Coding

80307-Drug Screen
 

Reference Values

None detected

Cannabinoids confirmation is not performed.

Immunoassay screen cut-off level: 50 ng/mL

Note: Drug results are to be used only for medical purposes. All results, especially unconfirmed screening results, must not be used for non-medical purposes.

Specimen Transport Temperature

Ambient

Additional Information

For BJH Laboratory Use Only
Analyte Stability:  

  • Processed sample stability:
    • Ambient - 2 days
    • Refrigerated (2-8°C) - 7 days
    • Frozen (≤-20°C) - 7 days
  • See Analyte Stability Chart under General Information for a complete list.

Laboratory Processing Instructions:

Test performed in BJH Core Lab.  Processed by automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days. 

Special Instructions

LOINC Code Information

Name LOINC Code
Cannabinoids Screen, Urine 70145-8