Mercury/Creatinine Ratio, Random, Urine
Use
Useful for detecting mercury toxicity, a toxic heavy metal, using random urine specimens. Daily urine excretion of mercury above 50 µg/day indicates significant exposure (per World Health Organization standard). Reference intervals: Mercury/Creatinine: 0–17 years: Not established; ≥ 18 years: < 2 µg/g creatinine. Creatinine: ≥ 18 years: 16–326 mg/dL.
Special Instructions
To avoid contamination by dust, specimen should be collected away from the site of suspected exposure. If gadolinium‑ or iodine‑containing contrast media has been administered, specimen should not be collected for 96 hours. Metals Analysis Specimen Collection and Transport instructions apply.
Limitations
Specimen contamination by dust may affect results. High concentrations of gadolinium and iodine may interfere with metal testing; specimen should not be collected within 96 hours after administration of contrast media.
New York Approved
Methodology
Mass Spectrometry (LC-MS/MS)
Biomarkers
LOINC Codes
- 13465-0
- 13465-0
- 2161-8
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
3 mL
Minimum Volume
1.5 mL
Container
Clean, plastic urine container with no metal cap or glued insert; plastic, 10‑mL urine tube or clean, plastic aliquot container with no metal cap or glued insert
Collection Instructions
Collect a random urine specimen; see Metals Analysis Specimen Collection and Transport for complete instructions.
Patient Preparation
If gadolinium‑ or iodine‑containing contrast media has been administered, a specimen should not be collected for 96 hours.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 7 days |
| Frozen | 7 days |