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Cannabidiol (CBD)/Tetrahydrocannabinol (THC) Ratio, Urine
Testing is referred to MedTox Laboratories Inc.
Expected Turnaround Time
3 - 5 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.
Plastic urine container without preservative
Collect urine in a plastic urine container without preservative.
Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
Causes for Rejection
Urine from preservative tube
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)