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Zinc Protoporphyrin (ZPP)
MessageWHOLE BLOOD - DO NOT CENTRIFUGE
Test Code
948
Alias/See Also
LAB1085
ZZP
ZZP
CPT Codes
84202
Preferred Specimen
2 mL whole blood collected in an EDTA (tan-top) tube
Minimum Volume
0.5 mL • Pediatric specimen: 0.2 mL
Other Acceptable Specimens
Whole blood collected in: EDTA (royal blue-top) tube, 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
Mon-sat
Limitations
Aluminum and anemia of chronic disease may cause elevated results.
Reference Range
| Industrial Exposure | <100 mcg/dL |
Clinical Significance
Zinc protoporphyrin (ZPP) accumulates in erythrocytes as a result of chronic lead absorption or iron deficiency anemia.
Performing Laboratory
| Quest Diagnostics Nichols Institute-Chantilly VA |
| 14225 Newbrook Drive |
| Chantilly, VA 20151-2228 |