second. &nbsp. How to use the Elapsed Time Calculator: Set each date to a time in the past or the future, or NOW. (Click on NOW and change to Choose a date if you want to set both dates.) Click and type or use the arrows to change the year.
A TSH test measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland and tells the thyroid gland to make and release the hormones thyroxine (T4) and triiodothyronine (T3). See also: T3 test.
thyrotrophic hormone or thyroid stimulating hormone (TSH) a hormone secreted by the anterior lobe of the PITUITARY GLAND which triggers the shedding of THYROXINE from the colloidal follicles of the THYROID GLAND into the bloodstream. Excess thyroxine inhibits the production of TSH - an example of a negative FEEDBACK MECHANISM.