Thallium, 24 Hour, Urine
Use
Detecting toxic thallium exposure in 24‑hour urine collections, as thallium exposure may result in gastrointestinal symptoms, peripheral neuropathy, alopecia, seizures, and renal injury; most thallium is excreted in the urine and can be detected up to two months post‑exposure. Useful in settings of suspected acute or chronic thallium exposure. ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/8603?utm_source=openai))
Special Instructions
Patient preparation: Avoid collection for 96 hours following administration of gadolinium‑ or iodine‑based contrast media due to interference. Supplies: Urine Tubes, 10 mL (T068); collection in a clean plastic container with no metal cap or glued insert; aliquot 10 mL into a plastic 10‑mL urine tube or aliquot container. See Metals Analysis Specimen Collection and Transport and Urine Preservatives‑Collection and Transportation for complete instructions. ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/8603?utm_source=openai))
Limitations
High concentrations of gadolinium or iodine contrast media can interfere with ICP‑MS metal testing, necessitating a 96‑hour waiting period before specimen collection. No significant cautionary statements otherwise noted. ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/8603?utm_source=openai))
New York Approved
Methodology
Mass Spectrometry (ICP‑MS/MS)
Biomarkers
LOINC Codes
- 5746-3
- 5746-3
- 13362-9
Result Turnaround Time
2-5 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
10 mL
Minimum Volume
0.3 mL
Container
Clean, plastic urine container with no metal cap or glued insert; aliquot into plastic 10‑mL urine tube (T068) or clean plastic aliquot container with no metal cap or glued insert
Collection Instructions
Collect urine for 24 hours; refrigerate within 4 hours of completion; aliquot 10 mL into specified tube/container
Patient Preparation
If gadolinium‑ or iodine‑containing contrast media administered, delay collection for 96 hours
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 28 days |
| Refrigerated | 28 days |
| Frozen | 28 days |