serum concentrations of thyroxine ( t4 ) , triiodothyronine ( t3 ) , and thyroid-stimulating hormone ( tsh ) were measured for 14 hypothyroid patients while they were receiving usp desiccated thyroid and after six weeks of therapy with comparable doses of levothyroxine sodium ( na-l-thyroxine ) .
C0020676
hypothyroid
C0040165
thyroxine