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Zinc, RBC
Test Code6354
CPT Codes
84630<br><strong>This test is not available for New York patient testing. </strong>
Preferred Specimen
0.5 mL red blood cells collected in an EDTA trace metal-free (royal blue-top) tube
Minimum Volume
0.3 mL
Other Acceptable Specimens
Red blood cells collected in: EDTA (lavender-top), sodium heparin trace metal-free (royal blue-top), sodium heparin (green-top), sodium heparin lead-free (tan-top), or lithium (green-top) tube
Instructions
Carefully clean skin prior to venipuncture.
Avoid hemolysis.
Avoid worksite collection.
Red blood cells Trace Metal: Use the royal blue-top trace metal evacuated tube with EDTA or Sodium Heparin for RBC trace metal testing.
Packed Cells: Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a plastic transfer vial from a Quest Diagnostics (trace element and metal free) collection kit or transfer to a plastic screw cap vial.
Avoid hemolysis.
Avoid worksite collection.
Red blood cells Trace Metal: Use the royal blue-top trace metal evacuated tube with EDTA or Sodium Heparin for RBC trace metal testing.
Packed Cells: Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a plastic transfer vial from a Quest Diagnostics (trace element and metal free) collection kit or transfer to a plastic screw cap vial.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 10 days
Frozen: Unacceptable
Refrigerated: 10 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Moderate hemolysis • Clotted
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
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: Tues-Sat; Report available: 2-4 days
Clinical Significance
Zinc is an essential element involved in a myriad of enzyme systems including wound healing, immune function, and fetal development. Zinc measurements are used to detect and monitor industrial, dietary, and accidental exposure to zinc. Also, Zinc measurements may be used to evaluate health and monitor response to treatment.
