free thyroxin was the most specific assay ( lowest number of falsely increased or decreased results ) in detecting thyroid disorders , with a specificity of 93.6 % as compared with 85.1 % for tsh , 81.9 % for thyroxin , and 77.6 % for triiodothyronine .
C0040128
thyroid disorders
C0040165
thyroxin