Thyroxine (T4) is the main hormone your thyroid makes. Your thyroid hormones are important because they control how your body uses energy from the food you eat. (Photo Credit: iStock/Getty Images) T4 ...
RADIOIODINE (I131) has been used extensively in the diagnosis of thyroid disorders, and many tests have been developed. 1–3 Most of these tests are based on two aspects of thyroid activity: the ...