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 ...

Modern-day TSH methods however, with their enhanced sensitivity are also capable of detecting the low TSH values typical ... With this level of sensitivity, it is possible to distinguish the ...

Thyroid cancer recurrence risk was not elevated among patients with high-normal vs low-normal exposure to TSH following thyroidectomy.

Some physicians use a low-normal range therapeutic target for TSH when patients have undetectable serum Tg levels and have had no recurrence 5-10 years after thyroidectomy. If iodide intake is ...