Zinc
Label Mnemonic: | ZNS |
Epic code: | LAB4306 |
Order form: | Laboratory Requisition |
Supply order: | Supply Order Form |
Billing: | Billing Policies |
CPT code: | 84630 |
Specimen(s):
Blood
Collection Medium:
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Royal Blue K2 EDTA tube |
Minimum:
Preferred Minimum: 2.0 mL plasma from royal blue K2 EDTA tube
Absolute Minimum: 0.5 mL plasma from royal blue K2 EDTA tube
Absolute Minimum: 0.5 mL plasma from royal blue K2 EDTA tube
Rejection Criteria:
Specimens collected in containers other than specified. Specimens
transported in containers other than specified. Hemolyzed specimens.
Turn Around Time:
1-3 days upon receipt at reference laboratory
Reference Range:
60.0-120.0 μg/dL
Interpretive Data:
Elevated results may be due to skin or collection-related
contamination, including the use of a noncertified metal-free
collection/transport tube. If contamination concerns exist due to
elevated levels of serum/plasma zinc, confirmation with a second
specimen collected in a certified metal-free tube is recommended.
Circulating zinc concentrations are dependent on albumin status and are depressed with malnutrition. Zinc may also be lowered with infection, inflammation, stress, oral contraceptives, and pregnancy. Zinc may be elevated with zinc supplementation or fasting. Elevated zinc concentrations may interfere with copper absorption.
Circulating zinc concentrations are dependent on albumin status and are depressed with malnutrition. Zinc may also be lowered with infection, inflammation, stress, oral contraceptives, and pregnancy. Zinc may be elevated with zinc supplementation or fasting. Elevated zinc concentrations may interfere with copper absorption.
Comments:
Patient Preparation: Diet, medication, and nutritional
supplements may introduce interfering substances. Upon the advice of
their physician, patient should be encouraged to discontinue
nutritional supplements, vitamins, minerals, and nonessential
over-the-counter medications for one week prior to sample draw.
Methodology:
Quantitative Inductively Coupled Plasma/Mass Spectrometry
Instructions:
Separate from cells ASAP or within 2 hours of collection.
Sample Processing:
Centrifuge and poor off plasma into reference laboratory Trace
Element-Free Transport Tube ASAP. Do not allow plasma to remain on
cells.
Transport Instructions:
Ship at room temperature.