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HelpTest Code LAB1231927 Zinc, 24 Hour, Urine
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Zinc, 24 Hr, USpecimen Type
UrineOrdering Guidance
The use of blood testing is recommended for children younger than 10 years. Order ZN_S / Zinc, Serum.
Necessary Information
24-Hour volume (in milliliters) is required.
Specimen Required
Patient Preparation: High concentrations of barium are known to interfere with this test. If barium-containing contrast media has been administered, the specimen should not be collected for at least 96 hours.
Supplies: Urine Tubes, 10 mL (T068)
Collection Container/Tube: Clean, plastic urine collection container with no metal cap or glued insert
Submission Container/Tube: Plastic urine tube or clean, plastic aliquot container with no metal cap or glued insert
Specimen Volume: 10 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. Refrigerate specimen within 4 hours of completion of 24-hour collection.
3. See Metals Analysis Specimen Collection and Transport for complete instructions.
Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Ambient | 28 days | ||
| Frozen | 28 days |
Specimen Minimum Volume
0.4 mL
Special Instructions
Day(s) Performed
Monday, Thursday
Specimen Retention Time
14 daysReport Available
2 to 5 daysReference Values
0-17 years: Not established
≥18 years: 109-1,476 mcg/24 h
Useful For
Identifying the cause of abnormal serum zinc concentrations using a 24-hour urine specimen
CPT Code Information
84630
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ZNU | Zinc, 24 Hr, U | 5765-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8591 | Zinc, 24 Hr, U | 5765-3 |
| TM8 | Collection Duration | 13362-9 |
| VL5 | Urine Volume | 3167-4 |