During the last years extensive experience was gained using CPA and Impact-R™ method. Over 40 scientific studies and reviews have been published by the inventors and their worldwide collaborators at various renowned medical institutions on the CPA technology. These publications established the medical and scientific proof for the Impact™ test which is a useful method for testing platelet function among patients with bleeding disorders, screening of primary hemostasis abnormalities including thrombocytopenia and for monitoring replacement therapy, detecting the response to anti platelet drugs and for testing patients at risk of thrombosis. It can be used for testing both hypo- and hyper-function of platelets. Furthermore, it provides a quick method for monitoring the response to various anti platelet drugs.