Cannabidiol (CBD)/Tetrahydrocannabinol (THC) Ratio, Urine

CPT: 80349
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Special Instructions

Testing is referred to MedTox Laboratories Inc.

Expected Turnaround Time

3 - 5 days

Related Documents

For more information, please view the literature below.

CBD/THC Testing

Specimen Requirements


Urine (random)


30 mL

Minimum Volume

3 mL


Plastic urine container without preservative


Collect urine in a 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


To assist in distinguishing whether a positive urine THC test is exclusively the result of CBD use.


Liquid chromatography/tandem mass spectrometry (LC/MS-MS)


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
701907 Cannabidiol (CBD)/THC Ratio,Ur 701905 CBD:THC Ratio RATIO 95075-8

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