Tetrahydrocannabinol (THC-COOH/THCV-COOH)

TEST: 791626
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CPT: 80349
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Expected Turnaround Time

5 - 7 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Specimen Requirements

Specimen

Urine (random)

Volume

20 mL

Minimum Volume

10 mL

Container

Plastic urine container without preservative

Storage Instructions

Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.

Causes for Rejection

Urine from preservative tube

Test Details

Use

Detect the presence of secondary metabolite of tetrahydrocannabinol to evaluate use of herbal marijuana versus pharmaceutical THC.

Methodology

Chromatography with Mass Spectrometry

Reference Interval

The presence of THCV metabolite in urine indicates prior use of marijuana or a related product and cannot be the result of the sole use of Marinol®.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
791626 THC-COOH/THCV-COOH 791625 THC-COOH ng/ml 3436-3
791626 THC-COOH/THCV-COOH 791627 THCV-COOH ng/ml 75651-0

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2021, 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