Used in biomedical research to quantify levels of surfactant protein A (SP-A) in lung tissue and biological fluids, aiding in the study of pulmonary diseases such as acute respiratory distress syndrome (ARDS), neonatal respiratory distress, and lung infections. The kit enables researchers to assess lung immune function and alveolar integrity by measuring SP-A, a key protein involved in host defense and surfactant homeostasis. Commonly applied in preclinical studies, clinical diagnostics development, and monitoring disease progression or therapeutic response in lung-related conditions.