Internal attenuator counting in radioimmunoassay.
D006801:Humans; D011863:Radioimmunoassay / Q000379:methods*; D011933:Reagent Kits, Diagnostic; D013974:Thyroxine / Q000032:analysis*; D014284:Triiodothyronine / Q000032:analysis*
D011933:Reagent Kits, Diagnostic; D014284:Triiodothyronine; D013974:Thyroxine