A doctor can test your TSH levels with a blood test to diagnose thyroid disease. Normal TSH levels range from 0.4-4.0 mUI/mL, which indicates proper thyroid function. You can treat abnormal TSH levels ...

If you have hypothyroidism with normal TSH levels, you may still experience symptoms even though your thyroid stimulating hormone (TSH) blood test levels are well within range. Most people whose ...