Used in immunological research to detect and quantify circulating immune complexes (CICs) in human serum or plasma. These complexes are formed when antibodies bind to antigens in the bloodstream and are associated with autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis, and certain infections. The ELISA research kit enables researchers to assess immune system activation and monitor disease progression or response to therapy in clinical and research settings. It is also employed in studies investigating immune complex-mediated inflammation and pathogenesis. Due to its high sensitivity and specificity, the kit supports reliable measurement of CIC levels, aiding in the understanding of immune dysregulation and the development of targeted treatments.