Used in immunological research to detect and quantify Immunoglobulin A (IgA) in chicken samples, particularly in studies related to avian mucosal immunity. Commonly applied in poultry health research to assess immune responses in the respiratory and digestive tracts, where IgA plays a key role in defense against pathogens. Supports vaccine development and evaluation by measuring IgA levels before and after immunization. Also utilized in monitoring infectious diseases such as avian influenza, Newcastle disease, and infectious bronchitis, helping researchers understand mucosal antibody production and immune status in flocks. Suitable for use with serum, plasma, and mucosal secretions.