In 1998, light scattering aggregometry was invented to assess platelet function and activity by scientists at Brigham Young University and the University of Utah, who were associated with the Utah Artificial Heart Institute. Aggredyne has perfected this technology. With the AggreGuide, unprocessed whole blood, which has been collected in a standard blue top tube (citrate), is simply added to the disposable test cartidge that contains the freeze dried test reagent. In a few minutes, the results are displayed on the AggreGuide’s touch screen. That’s all there is to it. The AggreGuide A-100 tests platelet function one parameter at a time, while the AggreGuide A-600, which is under develpment, is a fully automated instrument that tests the entire platelet drug panel simultaneously without the need to pipette blood.