Used in research settings to quantify levels of soluble Interleukin-1 Receptor I in biological samples such as serum, plasma, or cell culture supernatants. This kit enables scientists to study the regulation of inflammatory responses, as IL-1sRI acts as a natural inhibitor of IL-1 signaling. It is particularly useful in immunology and inflammation-related studies, including autoimmune diseases, sepsis, and chronic inflammatory conditions. The assay helps in monitoring disease progression and evaluating the effectiveness of therapeutic interventions targeting the IL-1 pathway.