Can vary: Normal range of TSH levels can vary among different labs. Normal TSH range is 0.4-4.2 mu/l.
Answered 2/17/2021
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TSH: Depending on your symptoms, other thyroid labs, and whether you're being treated for a thyroid problem, normal TSH range is 0.4 - 4.0 miu/l (milli-international units per liter). If being treated the range is usually tighter, between 0.5 and 2.0 miu/l. Treatment decisions need more data than TSH alone, though.
Answered 6/10/2014
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