Zinc, Serum/Plasma

Test Code: TD_4261

CPT Code(s): 84630

$29

Test Details

Alternative Name(s)

Serum Zinc

Test Includes

Zinc

Methodology

Inductively Coupled Plasma/Mass Spectrometry (ICP-MS)

Rejection Criteria

Hemolysis
Samples collected in non-metal free tubes
Samples collected in serum separator tubes
Samples collected in tube with anticoagulant other than EDTA

Reference Range(s)

Specimen Requirements

Preferred Specimen

Trace metal-free (royal blue top) tube without additive

Minimum Volume

0.5 mL royal blue serum

Sample Stability

2 days room temperature
2 weeks refrigerated
2 weeks frozen

Transport Temperature

Refrigerated

Collection Instructions

1 mL serum from a royal blue trace metal-free tube without
additive. Centrifuge sample and separate serum from cells
within 2 hours of collection. Transfer serum to a plastic
transport tube. Clearly label tube as serum from a royal
blue top tube. Refrigerate.
Diet, medication, and nutritional supplements may introduce
interfering substances. Patients should be encouraged to
discontinue nutritional supplements, vitamins, minerals and
non-essential over-the-counter medications (upon the advice
of their physician) for 1 week prior to collection.
Avoid exposure to contrast media for 96 hours prior to
collection.
Note: zinc shows diurnal variation with higher levels
typically measured on fasting AM samples. For repeated
analysis, patients should have samples collected at a
consistent time of day

Alternative Specimen

1 mL plasma from a royal blue trace metal-free tube withEDTA. Centrifuge sample and separate plasma from cellswithin 2 hours of collection. Transfer plasma to a plastictransport tube. Clearly label tube as royal blue EDTAplasma. Refrigerate.