Used to detect and quantify Immunoglobulin M (IgM) antibodies in monkey serum or plasma samples. Commonly applied in infectious disease research to assess early immune responses, as IgM appears during the initial phase of infection. Helps monitor vaccine efficacy and immune system activation in preclinical studies involving non-human primates. Widely used in virology, immunology, and pharmaceutical research where monkey models are employed to study human diseases. Provides a reliable tool for measuring B-cell activity and antibody production in experimental settings.