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.

Low TSH levels may mean one has hyperthyroidism, while high TSH levels suggest hypothyroidism," the doctor explained, adding that in pregnancy, TSH levels fluctuate because of hormonal changes.

The apparent paradoxical dissociation between high levels of thyroid hormone and a non-suppressed serum TSH has led to the widespread use of the term "inappropriate TSH secretion syndromes" to ...

Diagnosis through blood tests and timely treatment are crucial for managing symptoms ... high level associated with stress and other hormonal blood tests, including thyroid function tests (TSH ...

Serum concentration rises in pregnancy, producing an enlarged thyroid without clinical symptoms of goiter. Normal serum level in nonpregnant ... is evaluated if TSH is abnormally high or low.