Used for the quantitative measurement of carbonic anhydrase (CA) activity in rat biological samples such as serum, plasma, tissue homogenates, and cell culture supernatants. This ELISA kit enables researchers to assess CA enzyme levels in studies related to respiratory physiology, acid-base balance, and diseases involving impaired CO₂ transport or pH regulation. It is commonly applied in preclinical research on lung function, kidney disorders, and neurological conditions where CA isoforms play a regulatory role. The assay provides high sensitivity and specificity, allowing accurate detection of CA activity changes in experimental models, making it valuable in pharmacological and toxicological studies evaluating drug effects or environmental impacts on enzyme function.