Used in immunological research to detect and quantify the C5b complement fragment in biological samples. This kit is essential for studying the terminal complement pathway activation, which plays a key role in inflammatory responses, immune defense, and tissue damage. Researchers use it in investigating conditions such as autoimmune diseases, sepsis, and neurodegenerative disorders where complement system dysregulation occurs. The assay helps assess membrane attack complex (MAC) formation, providing insights into disease mechanisms and potential therapeutic targets.