THC (Cannabinoids), Urine Screen with Reflex to Quantitation
Also known as: THC RFX U
Use
This test is useful for general screening in contexts of compliance and/or abuse. A screen with reflex testing allows for ruling out cannabinoid exposure. It does not distinguish between the delta-8 and delta-9 forms of THC or their metabolites. For follow-up testing of a presumptive result, THC Metabolite, Urine, Quantitative (0090369) is preferred.
Special Instructions
If the specimen screens positive, then Confirmation/Quantitation by LC-MS/MS (test code 0090369) is automatically added to confirm the result, and additional charges apply.
Limitations
The test does not differentiate between delta-8 and delta-9 THC forms or their metabolites. Presumptive negative results may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, diluted/adulterated urine, or limitations of testing. It is not valid for forensic use.
New York Approved
Methodology
Immunoassay (Other)
Biomarkers
LOINC Codes
- 19292-2
- 54247-2
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
4 mL
Minimum Volume
2 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect a random urine sample.
Storage Instructions
Transport at room temperature.
Causes for Rejection
Breast milk.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 week |
| Refrigerated | 1 month |
| Frozen | 1 month |