Serum TSH measurement after six weeks will indicate the need for dose adjustment by 25-50 µg increments. Children require higher doses of L-T4, up to 4.0µg/kg bw/day, due to rapid metabolism.

The normal reference range for TSH in adults is typically defined as 0.4 to 4.0 milli-international units per liter (mIU/L), according to the American Thyroid Association. However, it’s ...

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: ...