TSH stands for “thyroid stimulating hormone,” and the test measures how much of this hormone is in your blood. TSH is produced by the pituitary gland in your brain, ...

Medically reviewed by Do-Eun Lee, MD Thyroid-stimulating hormone (TSH) prompts the thyroid gland to increase hormone production. Your body uses TSH to control thyroid hormone levels.

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) ...

Medically reviewed by Isabel Casimiro, MD, PhD A TSH test measures the level of thyroid-stimulating hormone in your blood.

When thyroid hormone levels are high: On the other hand, if your body is more than thyroid hormones, your pituitary gland cuts back on its TSH production. This instructs your thyroid to decrease.

This broader view of metabolism helps us better understand hypothyroidism, a condition many people know as having a “slow thyroid.” People with hypothyroidism often struggle with weight gain, fatigue, ...

Use a thyroid hormone suppression test to verify a discordant high TSH level. Normal response to 1mg of L-T4 or 200µg L-T3 administered p.o. is a suppression in serum TSH of more than 90% by 48 ...

For example, the pituitary gland releases more thyroid-stimulating hormone (TSH) into the blood if it senses that levels are too low—and if those levels increase, it releases less TSH. (These 7 ...

What is thyroid-stimulating hormone (TSH)? The thyroid gland is a gland situated in the neck and secretes the thyroid hormones thyroxine (T4) and tri-iodothyronine (T3). These hormones are essential ...

Possible problems: You normally produce more thyroid stimulating hormone (TSH)—which tells your body to pump out more of several other thyroid hormones—as you age, says Salila Kurra, MD, an ...