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

TSH reference intervals should be established from the 95 % confidence limits of the log-transformed values of at least 120 rigorously screened normal euthyroid volunteers who have: ...

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 ...

Elevated thyrotropin levels were associated with an increased risk for depression, especially among women and those with hypothyroidism.

The L-T4 dose should be increased (usually by 50 µg/day) to maintain a serum TSH between 0.5 and 2.0 mIU/L and a serum FT4 in the upper third of the normal reference interval. Post-menopausal ...