Zinc, Serum or Plasma : 945

Test Code
ZINCS or 945

Alias/See Also
Zn

CPT Codes
84630

Instructions
Diet, medication, and nutritional supplements may introduce interfering substances. Upon the advice of their physician, patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications one week prior to sample draw.

Royal blue (no additives)(Available from Client Services supply #16359) or royal blue (EDTA) (Available from Client Services supply #16313).

Transport Container
Do not allow serum or plasma to remain on cells. Centrifuge tube within 2 hours of collection and transport 2 mL serum or plasma. (Min: 0.7 mL) Submit specimen in a trace element-free transport tube (Available from Client Services supply #43116).

Transport Temperature
Ambient.

Specimen Stability
Ambient: 5 days; Refrigerated: 10 days; Frozen: 30 days

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

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

Setup Schedule
Tuesday - Saturday

Report Available
2-4 days (From receipt at performing laboratory)

Reference Range
less than 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



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.