Used in immunological research to quantify rabbit antithymocyte globulin (ATG) levels in biological samples. Enables accurate measurement of ATG concentration in serum, plasma, or cell culture supernatants for studies related to immune response, transplantation, and autoimmune diseases. Supports development and monitoring of therapies involving T-cell depletion. Provides a reliable, sensitive, and specific method for researchers assessing immunosuppressive effects in experimental models.