Used in research settings to detect and quantify anti-proteinase 3 autoantibodies (PR3-ACPA) in rat serum or plasma samples. This ELISA kit is particularly valuable in studies related to autoimmune vasculitis, where PR3-specific autoantibodies play a key role in disease pathogenesis. It enables researchers to monitor immune responses, assess disease progression, and evaluate the efficacy of therapeutic interventions in animal models of autoimmune inflammation. The assay provides a sensitive and specific means to measure antibody levels, supporting investigations into the mechanisms of autoimmunity and immune regulation in rodents.