Zinc

Test Code
945

CPT Codes
84630

Preferred Specimen
2 mL plasma collected in an EDTA (royal blue-top) tube


Minimum Volume
0.7 mL

Other Acceptable Specimens
Serum collected in a no additive (royal blue-top) tube

Instructions
Separate plasma or serum from cells within 2 hours. Transfer separated plasma or serum to a plastic acid-washed or metal-free vial.

Transport Container
Plastic acid-washed or metal-free vial(s)

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 5 days
Refrigerated: 10 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Plasma or serum not separated from cells within 2 hours • Samples submitted in non-trace element or non-acid washed containers

Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) or Atomic Spectroscopy

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 the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Mon-Sat; Report available: Same day

Reference Range
≤5 Months 26-141 mcg/dL
6-11 Months 29-131 mcg/dL
12-23 Months 31-120 mcg/dL
2-3 Years 29-115 mcg/dL
4-5 Years 48-119 mcg/dL
6-9 Years 48-129 mcg/dL
10-13 Years 25-148 mcg/dL
14-17 Years 46-130 mcg/dL
Adult 60-130 mcg/dL


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.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
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.