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What is the normal range of thyroid stimulating hormone?

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As of late 2016, at most laboratories in the U.S., the official reference range for the Thyroid Stimulating Hormone (TSH) blood test runs from approximately 0.5 to 4.5/5.0. The reference range -- also sometimes called the "normal range" -- is an important part of the complete picture of thyroid diagnosis and treatment. read more

The lowering of TSH means that your thyroid is no longer getting a message to release hormone, and thyroid hormone production will slow down. The TSH Reference Range As of 2017, at most laboratories in the U.S. the official reference range for the TSH test runs from approximately 0.5 to 4.5 or 5.0 (mIU/L). read more

The normal TSH range is 0.4 to 5 milli-international units per liter (mIU/L). If your level is higher than this, chances are you have an underactive thyroid. Pregnancy can also make your TSH levels higher. read more

A normal TSH hormone level ranges from 0.5 mI/L to 5.0 mI/L in an adult. It indicates that signals coming from the pituitary gland go well with the activity of the thyroid gland. The doctors may use other side effects or signals you manifest alongside with your TSH level to determine if other issues are of concern. read more

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