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
Not provided.
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 - Mercury/Creat Ur
- 13465-0 - Mercury/Creat Ur
- 2161-8 - Creat Ur-mCnc
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 |