The KIF20A (Phospho-Ser528) Colorimetric Cell-Based ELISA Kit provides a lysate-free, convenient, and high-throughput approach for sensitive detection of KIF20A (Phospho-Ser528) protein expression profile in cells. The kit can be used for measuring the relative amounts of KIF20A (Phospho-Ser528) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on KIF20A (Phospho-Ser528).