Mellaril®
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Thioridazine and Metabolite, Serum/Plasma
Test ID: THIORQST
Test
Aliases/Synonyms
Method
Gas Chromatography
Report Includes
Thioridazine; Mesoridazine
Specimens
Avoid gel separator tubes; Serum; Plasma (EDTA)
Clinical Utility
Thioridazine is a phenothiazine for treating psychosis. Monitoring its level is important to optimize therapy, to avoid toxicity, and to assure compliance.
https://testdirectory.questdiagnostics.com/test/test-detail/23232/thioridazine-and-metabolite?q=23232&cc=MET, Accessed 12-Jun-2019.
Test Location
Quest Diagnostics, California USA
Test Version
30-Sep-2019
Specimen
Specimens
Avoid gel separator tubes; Serum; Plasma (EDTA)
Sample Volume
2 mL
Minimum Volume
0.7 mL
Specimen Comment
Avoid gel separator tubes.
Stability
| Ambient | 8 days |
|---|---|
| Refrigerated | 8 days |
| Frozen | 1 Year |
Rejection Criteria
| Specimen | Gel-separator tube |
|---|
Test Version
30-Sep-2019
Performance / Interpretation
Method
Gas Chromatography
Turnaround Time
10 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Thioridazine | ng/mL |
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Steady-state serum concentration during chronic oral administration of 400 mg daily: 140 - 2600 ng/mL. Therapeutic steady-state concentrations may overlap levels associated with toxicity. |
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| Mesoridazine | ng/mL |
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Test Location
Quest Diagnostics, California USA
Test Version
30-Sep-2019
Interface / Setup
Test Version
30-Sep-2019