Cannabinoid Analysis, Whole Blood
Use
This test provides an initial immunoassay screen for cannabinoids in whole blood, with reflex confirmation by GC/MS if positive—useful for detecting tetrahydrocannabinol (THC) exposure and its metabolites.
Special Instructions
Reflex confirmation (THC, GC/MS Confirmation – FMARX) will be performed only if the initial immunoassay screen is positive, at an additional charge.
Limitations
The immunoassay screen may yield false positives; confirmation by gas chromatography/mass spectrometry is required for definitive identification. The test was developed by LabCorp and is not FDA cleared or approved.
New York Approved
Methodology
Immunoassay (Multiplex Protein Panel)
Biomarkers
LOINC Codes
- 42491-1
- 42491-1
Result Turnaround Time
7-9 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
7 mL
Minimum Volume
3 mL
Container
Plastic vial
Collection Instructions
Draw blood in a purple‑top (EDTA), green‑top (sodium‑heparin) or grey‑top (NaF/oxalate) tube(s). Send 7 mL of whole blood refrigerated in a plastic vial.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 14 days |
| Frozen | 180 days |