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IODRU / IODU-M
IODINE, RANDOM, URINE

Test Code IODRU / IODU-M 
Test IODINE, RANDOM, URINE 
Methodology Inductively Coupled Plasma-Mass spectrometry (ICP-MS) 
Description Monitoring iodine excretion rate as an index of daily iodine replacement therapy

Correlating total body iodine load with (131)I uptake studies in assessing thyroid function 

Specimen 2 mL from a random urine collection as follows:
1. Collect in a clean, plastic urine collection container
2. Pour 2 mL into a plastic, 13-mL urine tube or a clean plastic aliquot container with no metal cap or glued insert.
3. See "Metals Analysis-Collection and Transport" in Special Instructions for complete instructions.
4. Send specimen refrigerated.

Note: High concentrations of gadolinium are known to interfere with most metals tests. If gadolinium-containing contrast media has been administered, a specimen cannot be collected for 48 hours. 

Reference Values 0-15 years: not established
> or = 16 years: 26-705 mcg/L 
Analytic Time 1 Day 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 83789