Why Thyroid Stimulating Hormone?
Thyroid function can be monitored by measuring T3, T4 and/or TSH. TSH is the best indicator of thyroid function. It helps determine where a thyroid problem is locatedthe thyroid gland or the pituitary. It gives an earlier indication of thyroid problems than T3 or T4 An elevated TSH indicates that the thyroid gland is not secreting enough thyroid hormones (hypothyroidism). A low thyroid stimulating hormone level indicates the thyroid is producing too much hormone (hyperthyroidism).