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What are TSH thyroid levels?

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Quick Answer

TSH is an acronym that stands for thyroid-stimulating hormone, notes WebMD. The level of TSH in the blood is checked when ruling out or diagnosing problems with the thyroid gland.

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Full Answer

TSH is released by the hypothalamus, and testing TSH levels is useful in determining whether or not the thyroid gland is functioning as it should, reports WebMD. TSH levels are used to diagnosis both underactive or hypothyroid conditions as well as overactive or hyperthyroid conditions. For adults, the normal TSH level is 0.4 to 4.2 microunits per milliliter, and for children, the normal level is 0.7 to 6.4 microunits per mililiter.

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