The Integrin beta4 Colorimetric Cell-Based ELISA Kit provides a lysate-free, convenient, and high-throughput approach for sensitive detection of Integrinbeta4 protein expression profile in cells. The kit can be used for measuring the relative amounts of Integrinbeta4 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on Integrinbeta4.