Used to measure levels of interleukin-36 receptor antagonist (IL-36Ra) in human biological samples such as serum, plasma, or cell culture supernatants. This assay is particularly valuable in immunological research focusing on inflammatory skin diseases like psoriasis, where IL-36 signaling plays a key role. By quantifying IL-36Ra, researchers can assess immune regulation, evaluate disease activity, and monitor responses to therapies targeting the IL-1 family pathway. The kit supports studies in autoimmune disorders, chronic inflammation, and drug development involving cytokine modulation.