| 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 |
|
| STAT TAT |
N/A |
| 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 |
|
|
Component |
|
|
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. |
