What level of TSH indicates hypothyroidism?

Normal and Abnormal TSH Ranges TSH > 4.0/mU/L with a low T4 level indicates hypothyroidism. If your TSH is > 4.0 mU/L and your T4 level is normal, this may prompt your physician to test your serum anti-thyroid peroxidase (anti-TPO) antibodies.

What is a high TSH level for hypothyroidism?

A high TSH level—above 5.0 mU/l—indicates an underactive thyroid, also known as hypothyroidism. This means your body is not producing enough thyroid hormone.

What is considered a high level of TSH?

The standard reference range for the TSH level is anywhere between 0.30 and 5.0 uIU/mL. If your TSH level is higher than 5.0 uIU/mL, then the lab will flag you as “high,” and you may experience the symptoms listed above 5.0 uIU/mL. Values of the TSH level more than 10.0 uIU/mL need long-term thyroid supplements.

What level of TSH requires medication?

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.

What is the normal range for TSH levels?

The normal TSH range is 0.4 to 5 milli-international units per liter (mIU/L). If your level is higher than this, chances are you have an underactive thyroid. Pregnancy can also make your TSH levels higher.

What is the recommended TSH level?

Normal TSH levels are between .4 and 4.0 mIU/L. If you have a thyroid condition, normal levels are between .5 and 3.0 mIU/L.

What are the causes of increased TSH levels?

Hypothyroidism is one of the most common causes of elevated TSH levels, the National Institute of Diabetes and Digestive and Kidney Disorders explains. The pituitary makes TSH to stimulate the production of thyroid hormones.

What is a high TSH level?

A high TSH level indicates that the pituitary gland is producing excess amounts of TSH and a disorder of thyroid gland exists. This condition is called hypothyroidism. TSH levels above 4.0mIU/L are considered to be high.