KTRK-TV Houston-Stay on top of the latest breaking news, weather and traffic with the ABC13KTRK app. It's the information you need to know in an app that's fun and easy to use.
Four tests â thyroid-stimulating hormone (TSH), Free T3, Free T4 and thyroid antibodies â are required to accurately assess the function of the thyroid gland, our master gland of metabolism. An optimal TSH level should be less than 2.0, not the currently accepted 4.7 reported by most labs.
In response, the other endocrine glands produce hormones that affect metabolism. For example, TSH from the pituitary gland stimulates the thyroid gland to produce thyroid hormones. In turn, thyroid hormones inhibit the release of calcium in the blood. Other adenohypophysis hormones have unique effects upon metabolism.