THC, MS, WB/SP Rfx
Use
This test is utilized for the confirmation of cannabinoids including THC and its metabolites in whole blood samples. It helps in assessing compliance and monitoring THC use in patients, particularly in situations where the use of THC needs to be verified or tracked. The use of MS for detection increases the accuracy and specificity of the test results, minimizing false positives.
Special Instructions
This test is only orderable as a reflex from the primary test FMARI. To ensure accurate results, proper specimen collection and handling are crucial. Make sure specimens are handled according to guidelines to maintain their integrity from collection to testing.
Limitations
The test's limitations include the inability to determine the timing of drug intake, the exact dose, and the pattern of usage exclusively from test results. Variations in metabolic rates between individuals can also affect the test outcomes. Moreover, interference from other substances, improper handling, or deviations from the recommended specimen type and storage conditions could lead to inaccurate results. The test is not FDA-approved and is not available for order by New York State clients.
Methodology
Mass Spectrometry (GC-MS)
Biomarkers
LOINC Codes
- 48943-5
- 73935-9
- 48944-3
- 48934-4
- 82964-8
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Only orderable as a reflex from FMARI. Ensure specimens are collected properly to prevent contamination and maintain integrity.
Patient Preparation
No specific preparation required. Follow standard blood collection procedures.
Storage Instructions
Refrigerate specimens if testing is delayed. Keep ambient for up to 72 hours or freeze for longer periods.
Causes for Rejection
Specimens that are not collected or stored properly may be rejected.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 14 days |
| Frozen | 180 days |