Test Code ZNS Zinc, Serum
Reporting Name
Zinc, SUseful For
Detecting zinc deficiency
Performing Laboratory

Specimen Type
SerumSpecimen Required
Patient Preparation: High concentrations of gadolinium, iodine, and barium are known to interfere with most metals tests. If gadolinium-, iodine-, or barium-containing contrast media has been administered, a specimen should not be collected for at least 96 hours.
Supplies:
-Metal Free B-D Tube (No Additive), 6 mL (T184)
-Metal Free Specimen Vial (T173)
Collection Container/Tube: 6-mL Plain, royal blue-top Vacutainer plastic trace element blood collection tube
Submission Container/Tube: 7-mL Metal-free, screw-capped, polypropylene vial
Specimen Volume: 0.8 mL
Collection Instructions:
1. Allow the specimen to clot for 30 minutes after collection; then centrifuge the specimen to separate serum from the cellular fraction. Serum must be removed from cellular fraction within 4 hours of specimen collection. Avoid hemolysis.
2. Remove the stopper. Carefully pour specimen into a metal-free, polypropylene vial, avoiding transfer of the cellular components of blood. Do not insert a pipet into the serum to accomplish transfer, and do not ream the specimen with a wooden stick to assist with serum transfer.
3. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.
Specimen Minimum Volume
0.2 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 28 days | METAL FREE |
Ambient | 28 days | METAL FREE | |
Frozen | 28 days | METAL FREE |
Special Instructions
Reference Values
0-10 years: 0.60-1.20 mcg/mL
≥11 years: 0.66-1.10 mcg/mL
Day(s) and Time(s) Performed
Monday; 2 p.m.
Tuesday through Friday; 5 p.m.
Saturday; 2 p.m.
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
84630
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
ZNS | Zinc, S | 5763-8 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
8620 | Zinc, S | 5763-8 |
Reject Due To
Gross hemolysis | Reject |
Gross lipemia | OK |
Gross icterus | Reject |
Method Name
Dynamic Reaction Cell-Inductively Coupled Plasma-Mass Spectrometry (DRC-ICP-MS)
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.