Test Details

Mnemonic

FAPE

Ordering Code

3804800

CPT-4 Code(s)

82542

Specimen Information

Patient Preparation

Patient must avoid alcohol for 24 hours prior to draw. Patient must also fast overnight (12 - 14 hours).
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Collect

Green sodium heparin
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Specimen Preparation

Centrifuge, separate plasma from cells within 45 minutes of collection and send 0.5 mL plasma frozen in a screw-capped plastic vial.
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Alternate Specimen

Plasma: Lavender EDTA or green lithium heparin
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Minimum Volume

0.15 mL
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Transport Temperature

Frozen
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Rejection Criteria

Lipemic samples
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Stability

Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen: 92 days
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Methodology

Gas Chromatography-Mass Spectrometry, Stable Isotope Dilution Analysis
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Reference Range

See report
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Performing Laboratory

Mayo Clinic Laboratories
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New York DOH Approval Status

Yes
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