Endocrine glands are responsible for production of hormones directly released into the blood rather than passing through a duct system. TSH or Thyroid Stimulating Hormone is produced by one such endocrine gland called pituitary gland. Top 10 TSH Facts and Figures Do Not Mistake it With Thyroid Hormones This is the common misconception about TSH. Thyroid hormones Triiodothyronine (T3) and Thyroxine (T4) are produced by thyroid gland, a tiny butterfly shaped gland located in front of the trachea(or wind pipe) and just at the base of larynx (or voice box). These hormones are produced as and when they are required. TSH is produced by pituitarygland in a joint venture with thyroid gland. In simple words, TSH or Thyrotropin stimulates and facilitates the production of T3 and T4 hormones. Are TSH and TRH Same? TRH translates to Thyroid Releasing Hormone; it is produced by hypothalamus located within the brain and is known to control the functioning of the pituitary gland (helping to produce