The Cleaved-Thrombin R (S42) Antibody Colorimetric Cell-Based ELISA Kit provides a lysate-free, convenient, and high-throughput approach for sensitive detection of Cleaved-Thrombin R (S42) Antibody protein expression profile in cells. The kit can be used for measuring the relative amounts of Cleaved-Thrombin R (S42) Antibody in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on Cleaved-Thrombin R (S42) Antibody.