Abstract: PRIMARY TESTS OF TT_3 and TT_41N SERUM BY SOLID PHASE MICROPARTICLES RADIOIMMUNOASSAY KIT Wu Kangmei Zhu Guiru（Radiuimmame Section of Medicine Lab,Beijing Friendship Hospital，100050）Li Xinjian（Medicine Lab of Zhamadian People's Hospital,Henan Prouince，463000）ABSTRACT The authers performed three batch experiments of TT_3 and TT_4 in serum with solid phase micropa-ticles radioimmunoassay kit．246 normal subjects samples are also measured． T_3 and T_4（ms）kits aresensitive，stable，reliable，simple and quick in opertion. It could be used widely in clinics.Key words triiodothyronine thyroxine solid phase microparticles radioimmunoassay kit