What do you know about TSH testing?

TSH testing is used to:

Diagnose a thyroid disorder in a person with symptoms
Screen newborns for an underactive thyroid
Monitor thyroid replacement therapy in people with hypothyroidism
Monitor anti-thyroid treatment in people with hyperthyroidism
Help diagnose and monitor infertility problems in women
Help evaluate the function of the pituitary gland (occasionally)
Screen adults for thyroid disorders, although expert opinions vary on who can benefit from screening and at what age to begin