Dear Dr. Roach: I'm set to have a CT scan of my lungs with iodine dye. I have hypothyroidism and am on 25 mg of levothyroxine. Should I take the medicine the day of the test? Or should I have the CT ...

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 ...

An ultrasound is a painless procedure that uses sound waves to generate images of the inside of your body. Your doctor will often use an ultrasound to create images of a fetus during pregnancy. A ...

The thyroid gland produces two thyroid hormones, triiodothyronine (T3) and thyroxine (T4), and releases them as needed by the body. The hypothalamus and the pituitary gland help control the thyroid ...

In the front of your neck — just below the voice box — is a tiny organ with an outsized impact on your body. The thyroid is a butterfly-shaped gland that produces hormones which control how quickly ...

ORLANDO, Fla. — Steering clinicians toward a cascade approach for thyroid function testing cut unnecessary orders by a monthly average of 15% and concurrent orders by 19% per month, according to ...

If a person wants to carry out a thyroid test, they may consider one of the following from these popular companies. None of these companies state that the Food and Drug Administration (FDA) approves ...

If a person wants to carry out a thyroid test, they may consider one of the following from these popular companies. None of these companies state that the Food and Drug Administration (FDA) approves ...