ABSTRACT
Objective To evaluate the sensitivity and speciality of protein chip technology, and discuss its value in diagnosis or classification of autoimmune diseases, and to make its methodological evaluation. Methods The anti-dsDNA was detected with gold-colloid assay, indirect immunoflurescence(IIF) assay and protein chip technology, respectively; the other seven autoantibodies including anti-SSA, anti-SSB, anti-Sm, anti-u1RNP, anti-Rib-P, anti-Scl-70 and anti-Jo-1 were simultaneously detected with immunoblotting(IBT) assay and protein chip technology, and then all the results were delt with statistical method. Results For anti-dsDNA, the sensitivity of protein chip technology was better than that of gold-colloid assay; there was significant difference between protein chip technology and IBT assay in detecting anti-Jo-1 in DM/PM(P