Ordering Recommendation

Preferred test to follow-up presumptive results. For general screening, THC (Cannabinoids), Urine Screen with Reflex to Quantitation (2012270) is preferred.


Quantitative Liquid Chromatography-Tandem Mass Spectrometry




1-4 days

New York DOH Approval Status
This test is New York DOH approved.
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: 1 Month

Reference Interval

Effective November 18, 2019

Drugs Covered Cutoff Concentrations
11-Nor-9-carboxy-THC 15 ng/mL

Interpretive Data

Methodology: Liquid Chromatography-Tandem Mass Spectrometry

Positive cutoff: 15 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: For laboratory developed tests not using a RUO kit, and for FDA approved, cleared or 510(k) exempt assays with alterations. 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.

Hotline History
CPT Codes

80349 (Alt code: G0480)

Component Test Code* Component Chart Name LOINC
0090369 11-Nor-9-carboxy-THC, Urn, Quant 3436-3
* 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
THC Metabolite, Urine, Quantitative