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 ...

Please provide your email address to receive an email when new articles are posted on . A 38-year-old woman was referred for evaluation of metastatic thyroid cancer. During a routine physical exam 10 ...