Used to detect and quantify mouse immunoglobulin G1 (IgG1) in biological samples such as serum, plasma, or cell culture supernatants. Commonly applied in immunological research to assess humoral immune responses in mouse models, especially in studies involving vaccines, infections, autoimmune diseases, and allergy. The kit enables researchers to measure antigen-specific IgG1 levels, helping to evaluate Th2-type immune responses. It is widely used in preclinical studies, pharmaceutical development, and biomedical research due to its sensitivity, specificity, and ease of use in high-throughput formats.