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Erythrocyte Porphyrin (EP), Whole Blood
Test Code39777
CPT Codes
84202
Preferred Specimen
1 mL whole blood collected in EDTA (royal blue-top), (lavender-top), (pink-top), or (tan-top) tubes
Minimum Volume
0.5 mL
Instructions
Transfer 1 mL whole blood to an Amber Transport Tube. Protect from light during collection, storage, and shipment.
Specimen should be tested for lead FIRST to avoid potential contamination problems. Use royal blue tube when also testing for lead.
Specimen should be tested for lead FIRST to avoid potential contamination problems. Use royal blue tube when also testing for lead.
Transport Container
Amber transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted
Methodology
Fluorometric
Setup Schedule
Monday, Wednesday, Friday Morning Tuesday Evening Report available: Next Day
Reference Range
0-35 ug/dL
Clinical Significance
Screen for erythropoietic protoporphyria (EPP) in patients with cutaneous photosensitivity.
