Lab Tsh Levels. In general the normal reference range for tsh levels is 0 5 to 5 0 milli international units per liter miu l of blood. If the result is more than 4 2 miu l the tsh level is high. Thyroid stimulating hormone tsh is produced by the anterior pituitary gland a small organ located below the brain and behind the sinus cavities. In general when the tsh level is above the normal range your tsh level is high.
According to the u s. If the result is more than 4 2 miu l the tsh level is high. High tsh levels can mean your thyroid is not making enough thyroid hormones a condition called hypothyroidism. Low tsh levels can mean your thyroid is making too much of the hormones a condition called hyperthyroidism. National library of medicine the normal tsh range in healthy adults is 0 4 to 4 0 milli international units per liter 0 4 4 0 miu l. Ranges between laboratories will vary with the upper limit being between 4.
High tsh levels can mean your thyroid is not making enough thyroid hormones a condition called hypothyroidism.
Some research suggests that this range should actually be more like 0 45 to 2 5 miu l. Some research suggests that this range should actually be more like 0 45 to 2 5 miu l. Tsh stimulates the thyroid a small butterfly shaped gland located inside the neck in front of the windpipe by binding to the tsh receptor to release the hormones t hyroxine t4 and. However doctors do not all agree on the precise tsh range of a normal functioning thyroid gland. If the result is more than 4 2 miu l the tsh level is high. In general when the tsh level is above the normal range your tsh level is high.