Used to measure urokinase-type plasminogen activator (uPA) activity in mouse samples such as plasma, serum, or cell culture supernatants. This assay helps in studying processes involving fibrinolysis, extracellular matrix degradation, cell migration, and tissue remodeling. Commonly applied in cancer research to evaluate tumor invasion and metastasis, as well as in inflammation and cardiovascular disease studies where uPA activity plays a regulatory role. The kit enables quantitative detection, supporting both basic research and drug development.