Casandra
Casandra Test Code MC48914Version 1 (DRAFT)
Performing Lab
Cannabinoid Analysis, Whole Blood
Clinical Use
Order TestUse
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
Not provided.
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.
Test Details
New York Approved
Methodology
Immunoassay (Multiplex Protein Panel)
Biomarkers
THC (Marijuana) Metabolite
AnalyteTHC (Marijuana) Metabolite
Other • Categorical (e.g., Positive / Negative / Indeterminate)
LOINC Codes
Order Codes
- 42491-1 - Cannabinoids Bld Ql Scn
Result Codes
- 42491-1 - Cannabinoids Bld Ql Scn
Result Turnaround Time
7-9 days
Related Documents
For more information, please review the documents below
Specimen Requirements
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 |