Used in immunological research to quantify VSIG4 protein levels in biological samples such as serum, plasma, and cell culture supernatants. This ELISA kit enables detection of VSIG4, a complement receptor expressed on macrophages, which plays a role in regulating immune responses, particularly in inflammation and autoimmune diseases. It is widely applied in studies related to chronic inflammatory conditions, sepsis, cancer immunology, and organ transplantation to assess immune modulation and macrophage activity. The assay supports high-throughput screening and biomarker validation in preclinical and clinical research settings.