Mercury, Random Urine
Also known as: U MERCRAND
Use
The Mercury, Random Urine test is useful in assessing acute or chronic elemental or inorganic mercury exposure and can be utilized in monitoring chelation therapy. Acute exposure is more accurately assessed with Mercury, Whole Blood. This urine test predominantly reflects exposure and is valuable when confirming suspected mercury toxicity.
Special Instructions
Patients are advised to discontinue nutritional supplements, vitamins, minerals, and nonessential over-the-counter medications 48 to 72 hours before the test. Avoiding shellfish and seafood during this period is also recommended. High concentrations of iodine can interfere with the test, and collection should be avoided for at least 72 hours after use of iodinated or gadolinium-based contrast media and for 14 days in patients with impaired kidney function post-contrast.
Limitations
Results may be affected by skin or collection-related contamination, particularly if trace element-free containers are not used. Elevated results suspected to be due to contamination should be confirmed with a new specimen collected in certified trace element-free containers.
New York Approved
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 13465-0
- 30921-1
- 35674-1
- 35674-1
- 30921-1
- 13465-0
Result Turnaround Time
1-5 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
8 mL
Minimum Volume
1 mL
Container
ARUP Trace Element-Free Transport Tubes
Collection Instructions
Collect as a random urine sample. Transfer an 8 mL aliquot from a well-mixed collection to ARUP Trace Element-Free Transport Tubes.
Patient Preparation
Patients should discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications, and avoid shellfish and seafood 48 to 72 hours prior to collection. Avoid urine collection within 72 hours post-iodinated or gadolinium-based contrast media exposure, and 14 days for patients with impaired renal function post-exposure.
Storage Instructions
Refrigerated. Also acceptable: Room temperature or frozen.
Causes for Rejection
Urine collected within 72 hours after administration of iodinated or gadolinium-based contrast media, acid-preserved urine, specimens contaminated with blood or fecal material, specimens not transported in trace element-free transport tubes.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 week |
| Refrigerated | 2 weeks |
| Frozen | 1 year |