Diagnosis
The diagnostic workup of a suspected iodine deficiency includes signs and symptoms as well as possible risk factors mentioned above.
In addition, a 24-hour urine iodine collection is a useful medical test, as approximately 90% of ingested iodine is excreted in the urine. If a 24-hour urine collection is not practical, a random urine iodine-to-creatinine ratio can alternatively be used.
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