THC Metabolite, Urine, Quantitative
Ordering Recommendation
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
1-4 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
Random urine.  
Specimen Preparation
Transfer 1 mL urine with no additives or preservatives to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Room temperature.  
Unacceptable Conditions
Specimens exposed to repeated freeze/thaw cycles.  
Ambient: 1 week; Refrigerated: 1 month; Frozen: 3 years  
Reference Interval
Effective August 17, 2015
Drugs Covered Cutoff Concentrations
11-​Nor-​9-​carboxy-​THC 5 ng/mL
Interpretive Data
Methodology: Liquid Chromatography-Tandem Mass Spectrometry

Positive cutoff: 5 ng/mL

For medical purposes only; not valid for forensic use.

The drug analyte detected in this assay, 9-carboxy THC, is a metabolite of delta-9-tetrahydrocannabinol (THC). Detection of 9-carboxy THC 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. Normalization of results to creatinine concentration can help document elimination or suggest recent use, when specimens are collected at least one week apart.

Compliance Statement B: This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
CPT Code(s)
80349; (Alt code: 82491)
Component Test Code*Component Chart NameLOINC
009036911-Nor-9-carboxy-THC, Urn, Quant3436-3
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
  • 9-Carboxy-THC
  • Cannabinoids
  • Cannabis
  • Dronabinol
  • Marijuana
  • Marinol
  • Pain Management
  • Pain Management, Marijuana Metabolite, Quantitative, with medMATCH, Urine
  • Pain Management, Marijuana Metabolite, with Confirmation with medMATCH, Urine
  • THC