Used in biomedical research to detect and quantify MMP-4 protein levels in biological samples such as serum, plasma, and cell culture supernatants. Plays a key role in studying extracellular matrix remodeling, inflammation, and tissue repair processes. Commonly applied in research related to cardiovascular diseases, cancer progression, and autoimmune disorders where MMP-4 expression is altered. Provides a reliable, sensitive, and specific method for monitoring MMP-4 in experimental models and clinical investigations.