Used in immunological research to quantify Complement Protein 9 (C9) levels in biological samples, this ELISA kit enables accurate measurement of C9 concentration in serum, plasma, and tissue extracts. It is particularly valuable in studies related to the terminal complement pathway, where C9 plays a key role in forming the membrane attack complex (MAC). Researchers use this kit to investigate inflammatory diseases, immune responses, and conditions involving complement system dysregulation, such as autoimmune disorders, sepsis, and certain kidney diseases. The assay supports high-throughput analysis with reliable sensitivity and specificity, making it suitable for both basic research and preclinical studies.