Used to measure low levels of Interleukin-8 (IL-8) in human biological samples such as serum, plasma, or cell culture supernatants. It is commonly applied in research settings to study inflammation, immune responses, and diseases like arthritis, asthma, cancer, and infectious diseases where IL-8 plays a key role. The high sensitivity allows detection of small concentration changes, making it valuable for early disease detection and monitoring treatment effects in clinical and preclinical studies.