A radioactive iodine uptake (RAIU) tests the function of your thyroid gland, which helps regulate your metabolism. It works by measuring how much radioactive iodine is absorbed by the thyroid gland, ...

In the radioactive iodine uptake (RAIU) test, you swallow a small amount of radioactive iodine before you receive a scan. The test reveals how well your thyroid is functioning. The thyroid is a gland ...

In Sweden, iodine has been added to table salt (10 mg/kg) since 1936; this amount was increased in 1966 to 50 mg/kg. To investigate a euthyroid Swedish population (n=44, 60–65 years) with its entire ...