It is qualitative determination of human autoantibodies of the immunoglobulins class IgG to 16 different antigens Mi-2?,Mi-2?,TIF1?,MDA5,NXP2,SAE1,Ku,PM-Scl-100,Pm-Scl175,Jo-1,SRP,PL-12,EJ,OJ & Ro-52 in serum to support the diagnosis of dermato & polymyo