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Zinc, Plasma
Test CodeZINC
CPT Codes
84630
Instructions
Be sure to gently mix the specimen promptly after phlebotomy. Centrifuge the tube at 1000G for 10 minutes, separate plasma from cells immediately, pour the plasma into a plastic trace element shipping container. Hemolysis is unacceptable. Use powder-less gloves. Firmly replace the cap on the vial and ship the specimen at room temperature. Do not use royal-blue top tube tubes containing heparin since the specimen frequently will gel or develop microclots overtime. Separate plasma from cells within 2 hours. Transfer separated plasma to a plastic transfer vial from Quest Diagnostics trace element collection system.
Transport Container
EDTA (royal blue-top)
Transport Temperature
Room temperature, stable 5 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gel barrier tube; Moderate to gross hemolysis
Methodology
Inductively-Coupled Plasma/Optical Emission Spectroscopy
Reference Range
Pediatrics
<6 months: 26 - 141 mcg/dL
6-11 months: 29 â 131 mcg/dL
1 year: 31 â 120 mcg/dL
2-3 years: 29 â 115 mcg/dL
4-5 years: 48 â 119 mcg/dL
6-9 years: 48 - 129 mcg/dL
10-13 years: 25 â 148 mcg/dL
14-17 years: 46 â 130 mcg/dL
Adult: 60 â 130 mcg/dL
<6 months: 26 - 141 mcg/dL
6-11 months: 29 â 131 mcg/dL
1 year: 31 â 120 mcg/dL
2-3 years: 29 â 115 mcg/dL
4-5 years: 48 â 119 mcg/dL
6-9 years: 48 - 129 mcg/dL
10-13 years: 25 â 148 mcg/dL
14-17 years: 46 â 130 mcg/dL
Adult: 60 â 130 mcg/dL
Clinical Significance
This assay may be useful in supporting or ruling out a diagnosis of Sjögrenâs syndrome.
