Drugs of Abuse Confirmation/Quantitation - Cannabinoids (9-carboxy-THC) - Serum or Plasma
0090676
Ordering Recommendation
 
Mnemonic
CANNAB SP
Methodology
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Sun-Sat
Reported
1-4 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Gray (sodium fluoride/potassium oxalate). Also acceptable: Plain red, green (sodium heparin), lavender (EDTA), or pink (K2EDTA).  
Specimen Preparation
Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Separator tubes. Plasma or whole blood collected in lt. blue (sodium citrate). Specimens exposed to repeated freeze/thaw cycles.  
Remarks
  
Stability
After separation from cells: Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 3 years  
Reference Interval
   
Interpretive Data
Drugs covered: 9-carboxy-THC

Methodology:
Liquid Chromatography-Tandem Mass Spectrometry

Positive cutoff:
5 ng/mL

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 plasma half-life for 9-carboxy THC metabolite is estimated to range from 4-12 hours.

For medical purposes only; not valid for forensic use.

See Compliance Statement B: www.aruplab.com/CS  
Note
 
CPT Code(s)
82542
Components
Component Test Code*Component Chart Name
0090671Drug Confirmation, Cannabinoids, Ser/Pla
* 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.
Aliases
  • 9-Carboxy-THC
  • Cannabinoids
  • Cannabis
  • Dronabinol
  • Marijuana
  • Marinol
  • Pain Management
  • THC