Medically reviewed by Kelly Wood, MDKey TakeawaysThyroid blood tests help figure out how well your thyroid gland is working.TSH helps the thyroid gland know when to make more thyroid hormones. Free T4 ...

Subclinical hyperthyroidism means that a person has low or undetectable levels of thyroid-stimulating hormone (TSH) with normal levels of free thyroid hormones. It usually does not cause symptoms. The ...

The human body is complex, and hormones are the key messengers that conduct millions of processes. Of these, thyroid hormones occupy a very special place, controlling everything from our energy and ...

A randomized crossover trial evaluated the efficacy of different l-thyroxine dosing strategies and different target thyroid-stimulating hormone (TSH) ranges in patients with treated hypothyroidism.