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ZINC PROTOPORPHYRIN (ZPP) WHOLE BLOOD
Test CodeLAB1085
Preferred Specimen
2 mL whole blood collected in an EDTA (tan-top) tube or EDTA (royal blue-top) tube
Minimum Volume
0.5 mL • Pediatric specimen: 0.2 mL
Other Acceptable Specimens
Whole blood collected in: Sodium heparin (royal blue-top) tube, sodium heparin (green-top) tube or lithium heparin (green-top) tube
Instructions
Use a lead-free tube if blood lead is also requested
Transport Container
EDTA (tan-top) tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 10 days
Frozen: Unacceptable
Refrigerated: 10 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Clotted
Methodology
Hematofluorometry
Setup Schedule
A. M. Tues-sat
Report Available
3-4 days
Limitations
Aluminum and anemia of chronic disease may cause elevated results.
Clinical Significance
Zinc protoporphyrin (ZPP) accumulates in erythrocytes as a result of chronic lead absorption or iron deficiency anemia.
