Levothyroxine therapy is typically monitored with TSH and Tblood tests. The amount of Tand Tin blood serum directly affects levels of TSH that the pituitary gland produces. Sep 1 20TSH, or thyroid-stimulating hormone, is the hormone that stimulates your thyroid to produce Tand T4. Your thyroid is a small, butterfly-shaped gland situated at the base of the front of your neck, just below your Adam s apple. Tand Tlevels in your body are regulated by the thyroid-stimulating hormone, or TSH for short.
Often, a Ttest is done together with checking for high TSH if a person shows symptoms of hypothyroidism. Thyroid tests to check thyroid function usually check for abnormal levels of TSH and Thormones.
Symptoms of hypothyroidism (underactive thyroid) are usually associated with low levels of Tand T3. The presumption is that if Tlevels are restored to the normal range, Twill naturally convert to Tand deliver more of the active hormone the body needs. Doctors from the American Association for Clinical Chemistry say that the TSH mainly stimulates the production of Tand this is converted into Tby other tissues in the body.