"Free thyroxine index". A reliable substitute for "free" thyroxine concentration.
D001769:Blood; D002852:Chromatography, Ion Exchange; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006980:Hyperthyroidism / Q000175:diagnosis; D007037:Hypothyroidism / Q000175:diagnosis; D007457:Iodine Radioisotopes; D008722:Methods; D011485:Protein Binding; D012588:Scintillation Counting; D013959:Thyroid Diseases / Q000175:diagnosis; D013960:Thyroid Function Tests; D013974:Thyroxine / Q000097:blood*; D013975:Thyroxine-Binding Proteins; D014284:Triiodothyronine / Q000097:blood
D007457:Iodine Radioisotopes; D013975:Thyroxine-Binding Proteins; D014284:Triiodothyronine; D013974:Thyroxine