Used for the quantitative measurement of human interleukin-6 (IL-6) in serum, plasma, and cell culture supernatants with high sensitivity. Ideal for research involving inflammatory responses, immune system activation, and disease progression such as autoimmune disorders, infections, and cancers. Enables detection of low-abundance IL-6 levels, making it suitable for studies requiring precise monitoring of subtle changes in cytokine expression. Commonly applied in clinical research, drug development, and biomarker validation.