title: Comparison of five thyroxine radioassay kits.
mesh_terms: D006801:Humans; D011863:Radioimmunoassay / Q000379:methods; D011933:Reagent Kits, Diagnostic; D013974:Thyroxine / Q000097:blood*
chemical_list: D011933:Reagent Kits, Diagnostic; D013974:Thyroxine