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 ...

A 47-year-old man was commenced on levothyroxine following a diagnosis of subclinical hypothyroidism with nonspecific symptoms. Despite increasing doses of levothyroxine, his thyroid-stimulating ...

We present a case of a clinically euthyroid patient, who had persistently elevated thyroid stimulating hormone (TSH) but free thyroxine within the reference limits. She underwent repeated thyroid ...

Serum concentration rises in pregnancy, producing an enlarged thyroid without clinical symptoms of goiter ... is evaluated if TSH is abnormally high or low. Low TSH with a high FT4 or FT4I ...

TPO antibody may be positive, but thyroid hormone levels may be normal or there may only be isolated mild elevation of serum TSH is seen. Symptoms of hypothyroidism may be absent. Patients with ...

Intermittent or non-compliance with levothyroxine (L-T4) replacement therapy will result in discordant serum TSH and FT4 values (high TSH/high FT4) because of a persistently unstable thyroid state ...

Explain what to expect during the test. If your child is anxious about it, work together on ways to stay calm. Thyroid stimulating hormone (TSH) is made by the pituitary, a pea-sized gland at the base ...