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Thioridazine and Metabolite, Serum/Plasma
Test Code23232Z
CPT Codes
80299
Includes
Thioridazine and Mesoridazine
Preferred Specimen
2 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.7 mL
Other Acceptable Specimens
Plasma collected in an EDTA (lavender-top), EDTA (royal blue-top), sodium heparin (green-top), sodium fluoride (gray-top), ACD solution B (yellow-top) or 3.2% sodium citrate (light blue-top) tube
Instructions
The use of serum separator tubes is not acceptable. Submission of a serum separator tube will result in cancellation.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 8 days
Refrigerated: 8 days
Frozen: 1 year
Refrigerated: 8 days
Frozen: 1 year
Methodology
Gas Chromatography (GC)
Setup Schedule
Set up: As needed; Report available: 4 days
Clinical Significance
Thioridazine is a phenothiazine for treating psychosis. Monitoring its level is important to optimize therapy, to avoid toxicity, and to assure compliance.
