Circulating Tumor DNA Test Trial Leads (IMAGE) Walter and Eliza Hall Institute Caption Medical oncologists Associate Professor Sumi Ananda (L) and Associate Professor Jeanne Tie (R) are leading a trial of a blood test, the ctDNA test, to predict a cancer patient's chance of their cancer recurring. Credit Walter and Eliza Hall Institute, Australia Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.