THC Metabolite, Serum or Plasma, Quantitative
Also known as: CANNAB SP
Use
This test is used to detect exposure to cannabinoids, specifically identifying the presence of 11-Nor-9-carboxy-THC, a metabolite of THC, in serum or plasma. The detection of this metabolite suggests the use of, or exposure to, a product containing THC, although it cannot distinguish between the delta-8 and delta-9 forms or their respective metabolites. It also cannot differentiate between prescribed or non-prescribed forms of THC, nor between active or passive use.
Special Instructions
Not provided.
Limitations
This test cannot differentiate between active and passive exposure to THC or differentiate between prescribed and non-prescribed forms. It is not valid for forensic use and is intended solely for medical purposes. The plasma half-life for the detected metabolite is estimated to range from 4-12 hours.
New York Approved
Methodology
Mass Spectrometry
Biomarkers
11-Nor-9-carboxy-THC
Analyte
LOINC Codes
- 8170-3 - Cannabinoids SerPl-mCnc
Result Turnaround Time
1-5 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Separate serum from cells ASAP or within 2 hours of collection.
Causes for Rejection
Separator tubes; Plasma or whole blood in sodium citrate; Repeated freeze/thaw cycles.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 week |
| Refrigerated | 2 weeks |
| Frozen | 3 years |
Other tests from different labs that may be relevant