Used in biomedical research to quantify levels of surfactant protein A (SP-A) in human lung samples, this ELISA kit helps assess lung immune function and surfactant metabolism. It is commonly applied in studies of respiratory diseases such as acute respiratory distress syndrome (ARDS), chronic obstructive pulmonary disease (COPD), and neonatal lung disorders. Researchers also use it to investigate the role of SP-A in host defense mechanisms and inflammatory responses in the lungs. The kit enables high-throughput, sensitive detection, making it valuable in both clinical research and experimental pulmonary medicine.