Cannabinoid (THC) Confirmation, Urine

CPT: 80349
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Test Details

Test Includes

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

Use

Confirm the presence of cannabinoids

Methodology

Mass spectrometry (MS)

Specimen Requirements

Specimen

Urine

Volume

20 mL

Minimum Volume

7 mL

Container

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

Collection

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

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

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.

LOINC® Map

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
071316 Cannabinoid Confirmation, Ur 070474 Documentation N/A
071316 Cannabinoid Confirmation, Ur 711786 Cannabinoid GC/MS Holding N/A

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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf