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1769 CLOZAPINE (CLOZRIL) LEVEL
Test CodeCLOZAPA
Includes
Clozapine and Norclozapine
Preferred Specimen
2 mL serum collected in a red-top tube (no gel)
Minimum Volume
1 mL
Other Acceptable Specimens
Plasma collected in an: EDTA (lavender-top), or sodium or lithium heparin (green-top) tube
Transport Container
Plastic screw-cap vial
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 24 hours
Refrigerated: 5 days
Frozen: 30 days
Refrigerated: 5 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Gel barrier/Serum Separator Tube (SST®)
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon-Sat; Report available: 2 days
Clinical Significance
Clozapine is an atypical antipsychotic agent. Norclozapine has minimal therapeutic activity.