title: Simple method for determining the concentration of serum thyroxine by competitive displacement analysis.
mesh_terms: D006801:Humans; D007456:Iodine Isotopes; D007475:Ion Exchange Resins; D008433:Mathematics; D008722:Methods; D011874:Radiometry; D013974:Thyroxine / Q000097:blood*
chemical_list: D007456:Iodine Isotopes; D007475:Ion Exchange Resins; D013974:Thyroxine