Zinc Protoporphyrin (ZPP)

Test Code
ZPP (948)

Quest Code
948

CPT Codes
84202

Preferred Specimen
2 mL whole blood collected in an EDTA (lavender-top) tube - protect from light

Minimum Volume
0.5 mL 

Other Acceptable Specimens
Light protected whole blood collected in an: EDTA (royal blue-top), sodium heparin (green-top), sodium heparin lead-free (tan-top), sodium heparin (royal blue-top), or potassium EDTA, lead-free (tan-top) tube

Instructions
Specimen should be foil-wrapped to protect from light. Use a lead-free tube if blood lead is also requested.

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 4 days
Refrigerated: 10 days
Frozen: Unacceptable


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Received frozen • Clotted

Methodology
Hematofluorometry

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Mon-Sat; Report available: 1-2 days

Report Available
1 to 2 Day(s)

Limitations
Aluminum and anemia of chronic disease may cause elevated results.

Reference Range
See Laboratory Report

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
14225 Newbrook Dr
Chantilly, VA 20153



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.