Cannabinoid (THC) Confirmation, Urine

CPT: 80349
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Test Details

Test Includes

Confirmation of positive test; measurement of THC-9-carboxy metabolite


Confirm the presence of cannabinoids


Mass spectrometry (MS)

Specimen Requirements




20 mL

Minimum Volume

7 mL


Use plastic urine drug bottle and evidence tape or tamper-evident container for forensic specimen. Collection kits are available by request from the laboratory.


Urine temperature monitoring is recommended for samples to be tested for medicolegal purposes.

Storage Instructions

Maintain specimen at room temperature. If arrival at lab will extend beyond seven days, refrigerate.

Stability Requirements



Room temperature

14 days


14 days


14 days

Clinical Information

Special Instructions

Chain-of-custody documentation is required for samples submitted for preëmployment, random employee testing, and forensic purposes. For other applications, use the standard test request form. Please mark chain-of-custody test number on the test request form.


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
071316 Cannabinoid Confirmation, Ur 777151 Cannabinoid 19289-8
071316 Cannabinoid Confirmation, Ur 071753 Carboxy THC GC/MS Conf ng/mL 14313-1

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