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Lab Dept:
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Chemistry
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Test Name:
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CLONAZEPAM LEVEL
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General Information
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Lab Order Codes:
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CLZ
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Synonyms:
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Klonopin®; Clonopin, Nitrozepane; Rivotrol
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CPT Codes:
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80154 - Benzodiazepines
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Test Includes:
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Clonazepam level reported in ng/mL.
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Logistics
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Test Indications:
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Clonazepam is a long-acting benzodiazepine restricted in use to those patients who have responded for seizure control only to diazepam, but who no longer respond to diazepam within non-toxic levels. Clonezepam is an effective anticonvulsant, but used only as a last resort because of its side effects.
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Lab Testing Sections:
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Chemistry - Sendouts
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Referred to:
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Mayo Medical Laboratories (Test#: 500108)
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 - 4 day, performed 3 times weekly
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Whole blood
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Container:
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Red top tube
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Draw Volume:
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6 mL (Minimum: 2 mL) blood
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Processed Volume:
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2 mL (Minimum: 0.6 mL) serum
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Collection:
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Routine venipuncture
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Special Processing:
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Lab Staff: Centrifuge specimen, remove serum aliquot into a screw-capped round bottom plastic vial. Store and ship at refrigerated temperatures. Forward promptly.
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimens
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Interpretive
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Reference Range:
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20 – 60 ng/mL
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Critical Values:
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>100 ng/mL
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Limitations:
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N/A
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Methodology:
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High-Performance - Liquid Chromatography (HPLC)
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References:
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Mayo Medical Laboratories April 2010
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Updates:
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3/1/2004: Test moved from MedTox Laboratories to Mayo Medical Laboratories. Note: change in reference range from 20-60 ng/mL to 10-50 ng/mL.
4/22/2010: MML made test 8385 obsolete and started referring test 500108 to MML New England. Note updated ref range and method.
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