THC Metabolite, Urine, Quantitative

Casandra

Casandra Test Code AR17097Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0090369CPT Codes 0480, 80349

THC Metabolite, Urine, Quantitative

Also known as: CDCO THC

Clinical Use

Order Test

Use

The THC Metabolite, Urine, Quantitative test is used to obtain quantitative results or to follow up a presumptive result. It detects 9-carboxy THC, a metabolite of delta-9-tetrahydrocannabinol (THC), which suggests use of or exposure to a product containing THC. This test cannot distinguish between prescribed or non-prescribed forms of THC, nor can it distinguish between active or passive use. The 9-carboxy THC metabolite can be detected in urine for several weeks. It is mainly utilized for medical purposes and is not valid for forensic use.

Special Instructions

For general screening, the preferred test is THC (Cannabinoids), Urine Screen with Reflex to Quantitation (2012270). This test does not distinguish between the delta-8 and delta-9 forms of THC or their metabolites. The normalization of results to creatinine concentration can help document elimination or suggest recent use, especially when specimens are collected at least one week apart.

Limitations

This test does not distinguish between delta-8 and delta-9 forms of THC or their metabolites. The test cannot differentiate between prescribed or non-prescribed forms of THC or between active or passive use. Further, it is not for forensic use and has not been cleared or approved by the US Food and Drug Administration. Repeated freeze/thaw cycles can lead to specimen rejection.

Test Details

New York Approved