Paper
Optimal thyrotropin level: normal ranges and reference intervals are not equivalent.
Published Sep 27, 2005 · R. A. Dickey, L. Wartofsky, S. Feld
Thyroid : official journal of the American Thyroid Association
59
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2
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Abstract
This paper marshals arguments in support of a narrower, optimal or true normal range for thyrotropin (TSH) of 0.4 to 2.5 mIU/L, based on clinical results and recent information on the relatively stable and narrow range of values in patients without thyroid disease. The terminology used for TSH results is clarified in an attempt to help physicians interpret, explain, and respond to TSH test results for their patients.
The optimal thyrotropin range is 0.4 to 2.5 mIU/L, based on clinical results and stable values in patients without thyroid disease, improving physician interpretation and patient care.
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