Used for the quantitative measurement of Alpha-1-Antitrypsin (AAT) activity in biological samples such as serum, plasma, or tissue homogenates from rats. This ELISA kit is specifically designed to assess AAT functional levels in research models involving inflammation, lung injury, liver disease, or immune response. It enables researchers to monitor changes in AAT activity in experimental conditions, such as oxidative stress or protease-antiprotease imbalance. The assay is useful in preclinical studies evaluating therapeutic interventions targeting protease inhibition or anti-inflammatory pathways. High sensitivity and specificity allow accurate detection of AAT activity, supporting reliable data collection in rodent-based biomedical research.