Depends on lab: Hi. Normal ranges vary somewhat from lab to lab, but as a close approximation, TSH normal range is about 0.5 to 4.5 and free T4 normal range is about 0.8 to 1.8. If you get a copy of your lab results from your doctor, the normal ranges will be stated on the lab print out. Good luck!
Answered 7/9/2014
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