Used in veterinary diagnostics and research to detect and quantify immunoglobulin G (IgG) levels in bovine samples such as serum, plasma, or milk. Helps assess passive transfer of immunity from mother to calf by measuring IgG concentration in newborn calves, which is critical for diagnosing failure of passive transfer (FPT). Also employed in monitoring immune status in herds, evaluating colostrum quality, and supporting vaccine development and efficacy studies. The kit enables high-throughput analysis with high specificity and sensitivity, making it a standard tool in dairy and beef cattle health management.