we measured red blood cell 2,3-diphosphoglycerate ( 2,3-dpg ) , adenosine triphosphate ( atp ) , and the p50 value in vitro of the oxyhemoglobin dissociation curve , which is the oxygen tension at half saturation of hemoglobin , in order to quantitate red blood cell oxygen transport function in individuals who were diagnosed as hypothyroid , euthyroid , or hyperthyroid based on measurements of thyroxine ( t4 ) , triiodothyronine ( t3 ) , thyrotropin ( tsh ) , and their clinical status .
C0020676
hypothyroid
C0041014
triiodothyronine