Used in biomedical research to quantify CD38 protein levels in biological samples such as serum, plasma, and cell culture supernatants. Enables researchers to study immune system activation, as CD38 is expressed on the surface of various immune cells including T cells, B cells, and natural killer cells. Widely applied in immunology and oncology studies to monitor disease progression, especially in hematological malignancies like multiple myeloma and chronic lymphocytic leukemia. Supports investigation into inflammatory responses, autoimmune diseases, and viral infections including HIV and COVID-19. The kit provides a sensitive and specific method for detecting soluble CD38, aiding in biomarker discovery and therapeutic monitoring.