Used in biomedical research to quantify osteopontin levels in biological samples such as serum, plasma, and cell culture supernatants. Enables study of bone metabolism, inflammation, and tissue remodeling. Widely applied in research on osteoporosis, cancer progression, cardiovascular diseases, and autoimmune disorders. Supports investigation of cell signaling pathways involving integrins and CD44 receptors. Provides high sensitivity and specificity for detecting low concentrations of osteopontin, making it valuable in clinical research and drug development.