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Test 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.