title: Re: Clinical assessment of a radioimmunoassay for free thyroxine using a modified tracer.
mesh_terms: D006801:Humans; D011863:Radioimmunoassay / Q000379:methods*; D011933:Reagent Kits, Diagnostic; D013974:Thyroxine / Q000032:analysis*
chemical_list: D011933:Reagent Kits, Diagnostic; D013974:Thyroxine