Test Details
Mnemonic
ZPHRB
Ordering Code
3509190
CPT-4 Code(s)
84311, plus 82542 if reflexed to Porphyrins, Fractionated, at additional cost
Specimen Information
Patient Preparation
Patient should avoid alcohol for 24 hours before draw.
Collect
Green sodium heparin
Specimen Preparation
Place collection tube on wet ice immediately after drawing. Send entire whole blood specimen. Please include list of medications patient is currently taking.
Alternate Specimen
Dark blue heparin, lavender EDTA, green lithium heparin
Minimum Volume
3.0 mL
Transport Temperature
Refrigerated
Rejection Criteria
Frozen whole blood, gross hemolysis
Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: Unacceptable
Refrigerated: 7 days
Frozen: Unacceptable
Methodology
High Performance Liquid Chromatography/Spectrofluorometric
Reference Range
Porphyrins, Total, RBC: <80 mcg/dL
Performing Laboratory
Mayo Clinic Laboratories
New York DOH Approval Status
Yes