Useful as an indicator of chronic exposure to lead, primarily in the industrial setting. For iron deficiency assessment, Iron and Iron Binding Capacity (0020420) and Ferritin (0070065) are recommended. For lead exposure assessment, Lead Blood (Venous) (0020098) is preferred. For occupational exposure to lead assessment, Zinc Protoporphyrin (ZPP) Whole Blood Industrial (0020614) or Lead Industrial Exposure Panel, Adults (0025016) are recommended.
Lavender (EDTA); Royal blue, (EDTA), tan (EDTA), or pink (K2 EDTA). Use royal blue (EDTA) tube when also testing for lead.
Transport 1 mL whole blood. (Min: 0.2 mL)
Specimens not collected in EDTA. Clotted, frozen, or hemolyzed specimens.
Ambient: 30 hours; Refrigerated: 5 weeks; Frozen: Unacceptable
0-69 µmol ZPP/ mol Hem
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Elevated ZPP results are seen in early and late iron deficiency, the anemia of chronic disease, chronic lead poisoning, and erythropoietic protoporphyria. Elevated bilirubin or riboflavin and hemolyzed, clotted, or improperly aliquoted specimens may falsely increase the ZPP concentration.
A more specific test for free protoporphyrin is Porphyrins, Serum Total (0080429). Erythrocyte Porphyrin (EP), Whole Blood (0020610), measures free protoporphyrin and zinc protoporphyrin.
|Component Test Code*||Component Chart Name||LOINC|
|0020606||Zinc Protoporphyrin (ZPP) WholeBld Ratio||29763-0|
- ZPP/Heme Ratio