Iodine, Urine With Creatinine Ratio
Use
Monitor exposure to iodine; evaluate for iodine deficiency disorders (IDDs), excessive iodine intake, or iodine in the workplace
Special Instructions
If a 24-hour urine sample is submitted, the test request form must state the 24-hour collection volume. Ensure the urine container is labeled with the patient's full name, room number, the date and time collection started, and the date and time collection finished. No preservative should be used in the sample.
Limitations
The test's performance characteristics were determined by Labcorp and it has not been cleared or approved by the United States Food and Drug Administration. While turnaround times are generally 2 to 4 days, additional confirmatory or reflex tests might extend this duration.
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 2495-0
- 2492-7
- 2161-8
- 55928-6
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
15 mL
Minimum Volume
10 mL
Container
Plastic urine container without preservative
Collection Instructions
Instruct the patient to void at 8 AM and discard the specimen. Collect all urine including the final specimen voided at the end of the 24-hour collection period (8 AM the next morning). Screw the lid on securely and transport the specimen promptly to the laboratory. No preservative should be used.
Storage Instructions
Maintain specimen at room temperature.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 28 days |
| Refrigerated | 28 days |
| Frozen | 28 days |