One-on-one with CEO of company behind cancer blood test

CNN’s Pamela Brown sat down with Guardant Health CEO Helmy Eltoukhy, whose company created the Shield blood test. It screens for signs of breast, lung, colorectal, ovarian and pancreatic cancer in some adults and has received FDA approval.Pamela also asked Dr. Lucy De La Cruz, a breast cancer surgeon, about what the new testing methods will mean for her patients.