title: Labelled analogue "free" thyroxine assays: the unanswered questions.
mesh_terms: D006801:Humans; D011933:Reagent Kits, Diagnostic / Q000592:standards; D013974:Thyroxine / Q000097:blood*; D013975:Thyroxine-Binding Proteins / Q000032:analysis
chemical_list: D011933:Reagent Kits, Diagnostic; D013975:Thyroxine-Binding Proteins; D013974:Thyroxine