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What are normal TSH levels?

1 doctor weighed in
Dr. Susan Wingo
Internal Medicine - Endocrinology

In brief: It's controversial

There is broad consensus that a TSH between 0.
3-2.5 is normal (assuming no pituitary problem exists), and broad consensus that TSH levels above 10 are abnormal and should be treated. A middle-of-the-road approach might be to say that levels between 5-10 are abnormal, and treatment is likely to be beneficial, and that values between 2.5-5 may be abnormal, and that treatment may be beneficial.

In brief: It's controversial

There is broad consensus that a TSH between 0.
3-2.5 is normal (assuming no pituitary problem exists), and broad consensus that TSH levels above 10 are abnormal and should be treated. A middle-of-the-road approach might be to say that levels between 5-10 are abnormal, and treatment is likely to be beneficial, and that values between 2.5-5 may be abnormal, and that treatment may be beneficial.
Dr. Susan Wingo
Dr. Susan Wingo
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