Used in immunological research to detect and quantify mouse IgG3 antibodies in biological samples such as serum, plasma, or cell culture supernatants. Commonly applied in studies involving immune response, vaccine development, and autoimmune diseases where monitoring specific antibody isotypes is critical. The kit enables researchers to assess IgG3 levels accurately, supporting analysis of B-cell activity and humoral immunity in mouse models. Widely used in preclinical studies due to its specificity and sensitivity in detecting low concentrations of IgG3.