The Calcium Sensing Receptor Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor Calcium Sensing Receptor protein expression profile in cells. The kit can be used for measuring the relative amounts of Calcium Sensing Receptor in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on Calcium Sensing Receptor. Species Reactivity: human, mouse, rat. Range: > 5000 Cells. Sensitivity: >5000 cells