Used in immunological research to quantitatively measure Interleukin-27 (IL-27) levels in biological samples such as serum, plasma, and cell culture supernatants. Enables researchers to study the role of IL-27 in immune regulation, inflammation, and autoimmune diseases. Commonly applied in studies related to infectious diseases, cancer immunology, and therapeutic development where monitoring cytokine expression is critical. Provides a reliable, sensitive, and high-throughput method for detecting IL-27, supporting both basic research and preclinical evaluation.