Used in biomedical research to quantify rat elastase levels in biological samples such as serum, plasma, or tissue homogenates. This ELISA kit enables researchers to study the role of elastase in inflammatory processes, lung diseases, and tissue remodeling. It is particularly useful in models of emphysema, chronic obstructive pulmonary disease (COPD), and other conditions involving neutrophil activation. The assay provides a sensitive and specific measurement, supporting both preclinical studies and drug development where elastase activity is a biomarker or therapeutic target.