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Lab Dept:
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Chemistry
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Test Name:
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CAFFEINE LEVEL
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General Information
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Lab Order Codes:
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CAFM
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Synonyms:
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N/A
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CPT Codes:
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83520 - Immunoassay, analyte, quantitative; not otherwise specified
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Test Includes:
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Caffeine level in ug/mL
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Logistics
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Test Indications:
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Useful for therapeutic drug monitoring for treatment of neonatal apnea.
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Lab Testing Sections:
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Chemistry - Sendouts
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Referred to:
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MedTox Laboratories (Test# 18)
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Phone Numbers:
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MIN Lab: 612-813-6280
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STP Lab: 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 day
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Special Instructions:
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Trough levels are most reproducible
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Specimen
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Specimen Type:
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Blood
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Container:
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Green top (Li Heparin) or Red top tube
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Draw Volume:
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3 mL (Minimum: 0.6 mL) blood
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Processed Volume:
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1 mL (Minimum: 0.2 mL) serum or plasma.
Note: Submission of the minimum volume results in an elevated reporting range and inability to repeat analysis.
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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 plasma aliquot into a screw-capped round bottom plastic vial. Ship and store 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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Therapeutic concentration: 8 - 20 ug/mL
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Critical Values:
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>30 ug/mL
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Limitations:
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Reporting limit: 0.5 ug/mL
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Methodology:
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Immunoassay (IA)
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References:
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MedTox Laboratories Web Page (July 2006) www.medtox.com
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