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HelpTest Code UHG24M Mercury, 24 Hour, Urine
Additional Codes
MAYO: HGU
EPIC: LAB408
Reporting Name
Mercury, 24 Hr, UUseful For
Detecting mercury toxicity in 24-hour urine specimens
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
UrineNecessary Information
24 Hour volume is required.
Specimen Required
Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Supplies: Urine Tubes, 10 mL (T068)
Collection Container/Tube: Clean, plastic urine container with no metal cap or glued insert
Submission Container/Tube: Plastic, 10-mL urine tube or a 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 Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.
Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens in Special Instructions for multiple collections.
Specimen Minimum Volume
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 7 days | |
| Frozen | 7 days |
Special Instructions
Reference Values
0-17 years: not established
≥18 years: <2 mcg/24 hour
Toxic concentration: >50 mcg/24 hour
The concentration at which toxicity is expressed is widely variable between patients. 50 mcg/24 hour is the lowest concentration at which toxicity is usually apparent.
Day(s) Performed
Monday through Saturday
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
83825
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| HGU | Mercury, 24 Hr, U | 6693-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8592 | Mercury, 24 Hr, U | 6693-6 |
| TM5 | Collection Duration | 13362-9 |
| VL3 | Urine Volume | 3167-4 |
Report Available
1 to 4 daysReject Due To
| All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Method Name
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)