Used in immunological research to quantify secretory immunoglobulin A (SIgA) levels in chicken samples, this ELISA kit enables assessment of mucosal immune responses. It is widely applied in poultry health studies, vaccine development, and disease resistance monitoring. Researchers use it to evaluate the impact of diet, stress, infections, or immunostimulants on gut and respiratory immunity in chickens. The kit supports high-throughput analysis, making it valuable in both academic and commercial poultry science for improving flock health and productivity.