Our ENA ELISA test systems are semi-quantitative immunoassay for the detection of IgG antibodies to Jo-1, Sm, Sm/RNP, SSA(Ro), SSB(La), and Scl-70 in human sera. When performed according to these instructions, the results of these assays may aid in the diagnosis and treatment of autoimmune connective tissue disorders. This device is for research use only.