TSH levels higher than 4.5 mU/L usually indicate an underactive thyroid (hypothyroidism), and low TSH levels—below 0.4 ...
Medically reviewed by Kelly Wood, MD If you have hypothyroidism with normal TSH levels, you may still experience symptoms ...
Thyroid cancer recurrence risk was not elevated among patients with high-normal vs low-normal exposure to TSH following thyroidectomy.