This detection kit is a robust, sensitive and easy-to-use assay to determine GPCR activity through detection of intracellular cAMP levels. The HitHunter cAMP assay is intended for use with cells expressing Gαs- or Gαi-coupled GPCRs. This product uses EFC technology, and contains ED-tagged cAMP, anti-cAMP antibody, and pure EA. Upon application to a cell which contains endogenous, untagged cAMP, the anti-cAMP antibody will be sequestered by binding to this untagged cAMP, allowing for EFC between the tagged cAMP and soluble EA. This will produce a proportional level of chemiluminescent signal. This kit format is intended for Small Molecules, with a protocol written for use in a 384-well plate. This kit may be used with Eurofins DiscoverX cAMP cell lines as well as cell lines from other sources. This detection kit contains reagents for assaying 10 plates (384-well). For detailed product information, visit www.discoverx.com/products-applications/biochemical-assays.