from studies of serum obtained from euthyroid , hyperthyroid , and hypothyroid patients and from euthyroid pregnant women and women taking contraceptive ( oestrogen ) medication , the e.t.r . estimation has been shown to have a diagnostic accuracy ( 99 % ) in defining thyroid status comparable to that shown by the free thyroxine index ( 98 % ) .
C0020550
hyperthyroid
C0040132
thyroid