PALO ALTO, Calif.--(BUSINESS WIRE)--CardioDx, a pioneer in the field of cardiovascular genomic diagnostics, today announced that data presented at the American College of Cardiology’s 60th Annual Scientific Sessions demonstrate the ability of Corus™ CAD, a blood-based gene expression test, to identify obstructive coronary stenosis while adding independent information to coronary calcium scoring in patients undergoing CT angiography. In this study, the negative predictive value of Corus CAD for identifying obstructive coronary artery disease as assessed by CT angiography exceeded 95%.