Also known as: Third Generation TSH, Thyrotropin, TSH.

Thyroid-stimulating Hormone (TSH) is used to diagnose a thyroid disorder in someone with symptoms, screen newborns for an underactive thyroid, monitor thyroid replacement therapy in people with hypothyroidism, diagnose and monitor female infertility problems, help evaluate the function of the pituitary gland (occasionally), and screen adults for thyroid disorders, though expert opinions vary on the benefits of screening and at what age to begin.