What is a concerning TSH level?

Normal thyroid-stimulating hormone (TSH) levels typically fall between 0.4 and 4.0 milliunits per liter (mU/L), according to the American Thyroid Association (ATA). Higher levels suggest hypothyroidism, or an underactive thyroid, while lower levels indicate hyperthyroidism, or an overactive thyroid.

Is TSH of .75 normal?

The typical range of reference for TSH levels is anywhere between 0.45 and 4.5 milliunits per liter (mU/L) . A recent study suggests that the normal range should be more like 0.45 to 4.12 mU/L. TSH can vary wildly based on your age, sex, and stage of life.

When do you treat high TSH?

If your TSH level is elevated to between 4.5 and 10 mIU/L and your T4 is normal, you should be considered for treatment with thyroid medication, especially if you have symptoms of hypothyroidism, or you have a positive test for thyroid antibodies, a history of heart disease, or risk factors for atherosclerosis.

Can high TSH cause weight gain?

How Weight Gain Impacts Your Thyroid. Lackluster metabolism has been associated with high TSH levels and weight gain, new research suggests that it can be the reverse–that excess weight can depress the function of the thyroid gland.

What does it mean when your TSH level is normal?

A TSH test measures the amount of the hormone in the blood. Doctors can use the results to diagnose thyroid conditions, such as hypothyroidism and hyperthyroidism. Normal TSH ranges can vary widely, depending on a person’s age, sex, and body weight.

What should my TSH level be during pregnancy?

At the same time, the levels of TSH in the blood decrease. As a result, doctors use lower reference ranges for pregnant women. The lower TSH range is decreased by around 0.1 to 0.2 mU/l and the upper limit is decreased by around 0.5 to 1.0 mU/l.

Where does the hormone TSH come from in the body?

The pituitary gland produces TSH, which is a hormone that stimulates the thyroid gland. The thyroid is a butterfly-shaped gland in the throat. It produces hormones that help regulate many bodily functions, such as metabolism, heart rate, and body temperature.

How does the thyroid stimulating hormone ( TSH ) test work?

Summary. The thyroid stimulating hormone (TSH) test measures the amount of TSH in the blood. The results convey how well the thyroid is functioning. Doctors can use TSH test results to diagnose thyroid disorders, such as hypothyroidism and hyperthyroidism. The pituitary gland produces TSH, which is a hormone that stimulates the thyroid gland.