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 Field Name  Data Description
Test Name  Zinc
Code  Zinc Quantitative.
CPT Code  84630
Last Modified  7/16/2018 1:54:00 PM
Test Name  Zinc.
Synonyms  Routine Zn, Quantitative
Patient Preparation  
Spec. Requirements  Blood
Tube  Royal Blue(with or without EDTA)
Collection Volume   6.0 mL Royal Blue
Storage  Ambient, Refrigerated or Frozen 14 Days
Routine TAT  
Days Test Performed  
Performed by BHS  None
See Availability  
Reference Lab  LabCorp of America
Reference Lab Code  001800 Zinc, Plasma or Serum
Clinical Use  Monitor exposure to zinc; evaluate suspected nutritional inadequacy, especially in enteral or parental nutrition, critically ill or burn patients; cases of diabetes or delayed wound healing; growth retardation; follow therapy, for example when higher intravenous zinc doses are used to balance excessive ongoing GI losses in long-term total parenteral nutrition; follow oral zinc therapy in Wilson's disease; confirm acrodermatitis enteropathica and follow therapy Chronic oral zinc supplementation interferes with copper absorption and may precipitate copper deficiency. Albumin is the primary zinc binding protein: zinc levels should be interpreted with awareness of serum albumin level.
Reference Range  Environmental exposure: 56-134 mg/dL
Critical Value  
Reference Range  
Critical Value  
Testing Sample Type  Plasma (Preferred) or Serum
Min Lab Testing Volume  0.6 mL
Special Handling  Maintain specimen at room temperature.
Lab Notes  Collection: Separate serum from cells within 45 minutes of collection and transfer to a certified metal-free transport tube (PeopleSoft No. 111166) for shipment to the laboratory. Plasma may be separated immediately and transferred to a certified metal-free plastic transport tube (PeopleSoft No. 111166 for shipment to the laboratory. Causes for rejection: Unspun royal blue-top tube from which the plasma or serum has not been removed; gel-barrier tube
Methodology  Inductively Coupled Plasma/Mass Spectrometry
Limitations  Levels may be low in fever, sepsis, estrogen therapy, stress, or myocardial infarction, reflecting mobilization from serum to the liver by interleukin. Levels are usually low in uremia with normal tissue levels. Levels may be high in familial hyperzincemia without toxicity or high zinc stores.

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