Thyroid Stimulating Hormone (TSH)

What is thyroid stimulating hormone (TSH)?

Thyroid stimulating hormone (TSH) is a hormone produced by the pituitary gland that regulates the thyroid gland. The thyroid gland produces hormones that are essential for the proper functioning of the body's metabolism.

How does TSH regulate the thyroid gland?

TSH stimulates the thyroid gland to produce and release thyroid hormones into the bloodstream. When the levels of thyroid hormones in the body are low, TSH production increases in an effort to stimulate the thyroid gland to produce more hormones. When the levels of thyroid hormones in the body are high, TSH production decreases in order to reduce thyroid hormone production.

Can TSH levels be measured in the body?

Yes, TSH levels can be measured in the body through a blood test.

What is the normal range for TSH levels in the body?

The normal range for TSH levels in the body varies depending on the laboratory that performs the test, but it is generally between 0.4 and 4.0 milliunits per liter (mU/L).

What can cause abnormal TSH levels in the body?

Abnormal TSH levels can be caused by a variety of factors, including thyroid disorders, such as hypothyroidism and hyperthyroidism, and certain medications, such as lithium and interferon.

How is an abnormal TSH level treated?

The treatment for an abnormal TSH level depends on the underlying cause. If the abnormal TSH level is caused by a thyroid disorder, treatment may involve medications to regulate the levels of thyroid hormones in the body. If the abnormal TSH level is caused by a medication, the treatment may involve adjusting the dosage or switching to a different medication.