Zinc, 24-Hour Urine

Test Code
946

CPT Codes
84630

Includes
CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen
7 mL aliquot of a well mixed, unpreserved urine collected in a 24-hour acid-washed metal-free leak-proof container

Minimum Volume
3 mL

Instructions
Collect without preservative and transport in a plastic, acid-washed or metal-free conatiner. Record total volume on specimen container and on test requistion. Random urine is not acceptable. (To avoid contamination, do not measure 24-hour volume.)

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 5 days
Refrigerated: 14 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Fecal contamination • Random urine

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 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
100-1200 mcg/24 h

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.