Used in immunological research to quantitatively measure complement fragment C5a levels in biological samples such as serum, plasma, or cell culture supernatants. This kit is essential for studying inflammatory responses, immune system activation, and the role of the complement system in diseases like sepsis, rheumatoid arthritis, asthma, and ischemia-reperfusion injury. It enables researchers to evaluate therapeutic interventions targeting the complement pathway by providing a reliable method to monitor C5a concentration changes in experimental models.