Used to measure the activity of human neutrophil elastase (ELANE) in biological samples such as serum, plasma, or cell culture supernatants. This ELISA kit is particularly useful in research settings focused on inflammatory diseases, including chronic obstructive pulmonary disease (COPD), cystic fibrosis, and acute respiratory distress syndrome (ARDS), where ELANE plays a key role in tissue remodeling and immune response. It enables researchers to quantify active ELANE levels, helping assess disease progression, evaluate therapeutic interventions, and study the enzyme’s role in proteolytic pathways. The assay is designed for high sensitivity and specificity, making it suitable for detecting low concentrations of active enzyme in complex matrices.