Test ID ZN_S Zinc, Serum
Specimen Required
Patient Preparation: High concentrations of gadolinium, iodine, and barium are known to interfere with most metal tests. If gadolinium-, iodine, or barium-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Supplies: 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 Mayo metal-free, screw-capped, polypropylene vial
Specimen Volume: 0.8 mL
Collection Instructions:
1. Allow the specimen to clot for 30 minutes; 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 Mayo 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 for complete instructions.
Useful For
Detecting zinc deficiency
Special Instructions
Method Name
Dynamic Reaction Cell-Inductively Coupled Plasma-Mass Spectrometry (DRC-ICP-MS)
Reporting Name
Zinc, SSpecimen Type
SerumSpecimen 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 |
Reference Values
0-10 years: 60-120 mcg/dL
11-17 years: 66-110 mcg/dL
≥18 years: 60-106 mcg/dL
Day(s) Performed
Monday through Saturday
Report Available
1 to 3 daysPerforming Laboratory

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 US Food and Drug Administration.CPT Code Information
84630
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
ZN_S | Zinc, S | 5763-8 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
7735 | Zinc, S | 5763-8 |
NY State Approved
YesForms
If not ordering electronically, complete, print, and send General Test Request (T239) with the specimen.