Test Details

Mnemonic

5FL

Ordering Code

3502845

CPT-4 Code(s)

80299

Specimen Information

Patient Preparation

Please provide time and date of last dose and a list of all antibiotics that the patient is receiving or has received in the past 48 hours.
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Collect

Red top
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Specimen Preparation

Centrifuge, aseptically separate serum from cells and send 2.0 mL serum frozen in a screw capped plastic vial.
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Minimum Volume

1.0 mL
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Transport Temperature

Frozen
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Rejection Criteria

Plasma
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Stability

Room temperature: 2 hours
Refrigerated: 24 hours
Frozen: 7 days
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Methodology

Bioassay
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Reference Range

30 - 45 μg/mL with a 2 g PO dose
60 - 80 μg/mL with a 100 mg/kg/day PO dose
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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