Used in biomedical research to measure levels of Cathepsin K, an enzyme involved in bone resorption, in biological samples such as serum, plasma, or cell culture supernatants. This kit is particularly valuable in studies related to osteoporosis, arthritis, and other bone-related diseases where Cathepsin K activity is a biomarker. It enables researchers to quantify enzyme concentration accurately, supporting drug development and evaluation of therapeutic efficacy in preclinical studies. Widely applied in pharmaceutical and academic laboratories for immunoassay-based detection.