Thyroid blood tests help figure out how well your thyroid gland is working. TSH helps the thyroid gland know when to make ...
More than 20 million Americans have some form of thyroid disease, according to the American Thyroid Association, but up to 60 percent don't know it. A simple blood test to check your thyroid's hormone ...
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 ...