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HelpTest Code ZNB Zinc Quantitative, Whole Blood
Clinical Indications
Limited utility as an indicator of deficiency; concentration does not correlate well with intake. Zinc, Serum or Plasma concentrations are best for assessment of deficiency over short periods of time. For acute toxicity, Zinc, Urine may be a more reliable indicator of exposure.
Additional Test Codes
Epic Order Name: ZINC WHOLE BLOOD (aka
ZNB)
Sunquest Order Code: ZNB
Epic Px Code: LAB2553
Specimen Collection Type
Preferred: Royal blue (EDTA) whole
blood (call the lab at 8-1702 to have the appropriate tube
sent)
Acceptable: No other tube type is acceptable
Minimum Collection Volume
0.5 mL
Reference Range
440-860 µg/dL
Critical Value
N/A
Interpretation
Zinc concentration in blood has not been shown to change significantly in deficiency or with supplementation.
Rejection Criteria
Heparin anticoagulant. Clotted specimens. Frozen specimens. Whole blood collected in a royal blue EDTA tube is the only valid specimen for this test.
Specimen Availability for Add-on Testing
N/A
Specimen Stability
Refrigerated (preferred): Indefinitely
Ambient: Indefinitely
Frozen: Unacceptable
Day(s) Performed
Mon, Wed, Fri
Performing Lab- Department
TUKHS-BH-Mail Outs
CPT Code
84630
LOINC Code
8245-3
Test Alias
N/A
Additional Information / Notes
This test requires whole blood collected in a royal blue (dark blue-top) EDTA tube, which is generally not stocked on the units. This is NOT same as the royal blue no-additive tube, which is used for metals testing performed on serum. Call the lab at 8-1702 to have the appropriate tube sent.