Diadexus, Inc. announced that Jonathan Ruais has joined the Company as Vice President of Marketing. Mr. Ruais brings over 15 years of leadership experience to Diadexus, including nearly 10 years as a highly accomplished marketing executive in the medical industry. In his new role at Diadexus, Mr. Ruais will be responsible for developing and executing the company's marketing programs, including helping drive awareness and adoption of PLAC Activity within the hospital and lab channels and supporting the launch of proADM for acute episodes of heart failure.