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Thyrotropin - TSH


Results and Values

What do the test results mean?

The normal concentrations of TSH in blood range from 0.2 to 4.7 mcU/mL.

Abnormally high levels of TSH may indicate the following:

  • cretinism, or arrested physical and mental development
  • primary hypothyroidism, or decreased function of the thyroid caused by problems within the thyroid
  • secondary hypothyroidism, or decreased functioning of the thyroid caused by problems in other organs
  • thyroiditis, or inflammation of the thyroid
  • Abnormally low levels of TSH may indicate hyperthyroidism, which is an overactive thyroid gland. A low level is also seen with hypopituitarism, which is an underactive pituitary gland.


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