The IRF-3 (Phospho-Ser386) Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor IRF-3 (Phospho-Ser386) protein expression profile in cells. The kit can be used for measuring the relative amounts of IRF-3 (Phospho-Ser386) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on IRF-3 (Phospho-Ser386).