CMV infects the majority of the human population with the virus persisting, typically, asymptomatically, in various tissures. In states of immunodeficiency, however, the infection can reactivate, leading to clinical complications. The immune system responds to reactivation of the CMV virus, which can be detected by ELISPOT-based immune monitoring. For transplantation purposes, it is also essential to identify donors who have not been infected with CMV in order to avoid infecting transplant recipients. Presenting the ImmunoSpot® CMV Test Kits: for unambiguous enzymatic detection of CMV exposure and monitoring of anti-CMV immunity.