Subclinical hypothyroidism is defined as a state of relative thyroid dysfunction, characterized by normal serum levels of thyroid hormones and increased serum thyroid-stimulating hormone (TSH ...

Medically reviewed by Kelly Wood, MD Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.4 and 4.5 ...

Interpreting TSH levels Generally, normal TSH levels are between 0.5 ... than 5.0 mIU/L and may suggest an underactive thyroid, aka hypothyroidism. "A significantly elevated TSH isn't dangerous ...

Once the amount of T4 reaches appropriate levels, your pituitary gland recognizes that and stops producing TSH. In people with subclinical hyperthyroidism, the thyroid produces normal levels of T4 ...

A low-normal TSH level in the presence of a low TT4 and low TT3 may reflect central hypothyroidism as a result of a prolonged illness; whether or not this condition requires immediate treatment ...

Although 84.4% of patients who developed hypothyroidism had preoperative TSH levels within the normal range (0.5–4.0 mIU/l), the incidence of postoperative hypothyroidism was greater among ...

Pregnant women with hypothyroidism—somewhat arbitrarily defined as a verified TSH >5 mU/l, with a normal or low free T 4 value—should be advised of the potential risks and benefits of ...

In hypothyroidism, the thyroid gland fails to produce enough of the thyroid hormone thyroxine (also called T4). Because T4 is critically important in regulating the body's metabolism, digestive ...

In athletes with subclinical hypothyroidism, the average thyroid stimulating hormone (TSH) level was 5.53±0.24 mME/l, while in unaffected athletes it was 1.89±0.31 mME/l (p<0.01). The level of free T4 ...