Used to measure interleukin-8 (IL-8) levels in human biological samples such as serum, plasma, or cell culture supernatants. It is widely applied in research settings to study inflammation, immune responses, and diseases like asthma, arthritis, and cancer where IL-8 plays a role in disease progression. The kit enables accurate quantification of IL-8 concentration, supporting biomarker discovery, clinical diagnostics development, and evaluation of therapeutic efficacy in inflammatory and infectious conditions.