Used in biomedical research to measure levels of soluble interleukin-1 receptor type I in biological samples such as serum, plasma, or cell culture supernatants. This kit enables researchers to study the regulation of inflammatory responses, as IL-1sRI acts as a natural inhibitor of interleukin-1 signaling. It is particularly useful in investigating chronic inflammatory diseases, autoimmune disorders, and immune system modulation. The assay provides a quantitative method to assess IL-1 pathway activity, supporting studies in drug development, disease progression, and therapeutic monitoring in experimental models.