The Collagen IV Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect CollagenIV protein expression profile in cells. The kit can be used for measuring the relative amounts of CollagenIV in cultured cells as well as screening for the effects that variuos treatments, inhibitors (ie siRNA or chemicals), or activators have on CollagenIV.