Test Details

Mnemonic

ZPHFP

Ordering Code

3509180

CPT-4 Code(s)

84311, plus 82542 if fractionation performed, at additional cost

Specimen Information

Patient Preparation

Patient should not consume alcohol for 24 hours prior to draw. Include list of medications patient is currently taking.
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Collect

Green sodium or lithium heparin
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Specimen Preparation

Centrifuge, separate and send 3.0 mL plasma frozen in an amber screw-capped plastic vial. Protect from light. CRITICAL FROZEN.
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Alternate Specimen

Plasma: EDTA
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Minimum Volume

1.0 mL
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Transport Temperature

Critical frozen
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Rejection Criteria

Specimen not protected from light
Plasma gel tube, Gross hemolysis
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Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
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Methodology

Extraction Scanning Spectrofluorometry/High Performance Liquid Chromatography
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Reference Range

≤1.0 mcg/dL
If Total Porphyrins are >1.0 mcg/dL, then Porphyrins, Fractionation will be performed at an additional charge.
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Performing Laboratory

Mayo Clinic Laboratories
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New York DOH Approval Status

Yes
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