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Clonazepam
Test Code340
CPT Codes
80299
Preferred Specimen
2 mL serum collected in a red-top tube (no gel)
Patient Preparation
Collect at trough concentration, immediately before the administration of the next dose
Minimum Volume
1 mL
Other Acceptable Specimens
Serum collected in a no additive (royal blue-top) tube • Plasma collected in an: EDTA (lavender-top), or (royal blue-top), or sodium heparin or lithium (green-top) tube
Transport Container
Plastic screw-cap vial
Transport Temperature
Frozen
Specimen Stability
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: 14 days
Refrigerated: 72 hours
Frozen: 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gel barrier/Serum separator tube (SST)
Methodology
Chromatography/Mass Spectrometry
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 FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Tues, Thurs, Sat; Report available: 2-4 days
Reference Range
30-60 mcg/L
Clinical Significance
Clonazepam is a benzodiazepine used as a tranquilizer. Clonazepam is used in treating patients with seizures and in reducing tardive dyskinesia. Therapeutic drug monitoring is useful to avoid toxicity.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153