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Test Code NBLD0411 THC (Marijuana) Screen, Urine

Useful For

A qualitative screen for drugs of abuse


Enzyme-Multiplied Immunoassay Technique (EMIT)

Performing Laboratory

Bozeman Health Laboratory Services

Specimen Requirements

Specimen Type: Urine

Container/Tube: Clean container

Specimen Volume: 25 mL

Collection Instructions:

1. Collect a freshly-voided, random urine collection.

2. No preservative.

3. Refrigerate specimen after collection, and send specimen refrigerated.

4. If there is a delay in transport of >24 hours, freeze specimen in plastic container.

Specimen Transport Temperature

Refrigerated <24 hours/Frozen >24 hours

Specimen Stability

Specimen Type Temperature Time
Urine Refrigerated 24 hours
  Frozen 14 days


Reference Values

Negative (reported as positive or negative)

Cutoff concentration: 50 ng/mL

Positive results are only preliminary and only suggest that the sample may contain cannabinoids. Negative results indicate that either the sample does not contain cannabinoids or that cannabinoids are present in concentrations below the cutoff level of 50 ng/mL.

Additional Information

This test is not for Medico-Legal testing.

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding