Medically reviewed by Kelly Wood, MD Key Takeaways TSH influences thyroid hormones that control heart rate, metabolism, sleep ...

The thyroid-stimulating hormone (TSH) test measures the amount of TSH in the blood to convey how well a person’s thyroid functions. Normal levels are typically 0.4 to 4.0 milliunits per liter (mU/L) ...

Thyroid-stimulating hormone (TSH) helps control how much thyroid hormone your thyroid makes. High TSH usually means hypothyroidism, while low TSH points to hyperthyroidism. A typical adult TSH target ...

Keeping an eye on your thyroid-stimulating hormone (TSH) levels is key to catching any signs of thyroid dysfunction early on. That's because an underactive thyroid (hypothyroidism) or overactive ...

The thyroid stimulating hormone level is a measure of the pituitary hormone TSH, which stimulates the thyroid gland to release thyroid hormone (thyroxine, or T4). Many people, especially older women, ...

Patients treated for overt hypothyroidism with the standard replacement therapy levothyroxine (LT4) often continue to show abnormal cholesterol levels despite normalization of thyroid stimulating ...

Earlier this fall, Medscape Medical News spoke to endocrinologists Angela M. Leung, MD, and Karen Tsai, MD, on how to interpret abnormal results of thyroid hormone tests. To address some additional ...

Dear Dr. Roach: I am a 71-year-old female in very good health. I have been taking a thyroid replacement since I was 12 years old. I currently take 125 mcg of thyroxine once daily, as well as 60 mg of ...

Dear Dr. Roach: I am an 82-year-old woman in good health. I recently had labwork that showed my TSH level is 6.14. I was told that I would need thyroid medicine because eventually I would feel tired ...