The Phospho-ETS1 (Thr38) Fluorometric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor Phospho-ETS1 (Thr38) protein phosphorylation and expression profile in cells. The kit can be used for measuring the relative amounts of phosphorylated Phospho-ETS1 (Thr38) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals, or activators have on CAV1 phosphorylation.