Everything you need to know about the new colon cancer blood test

The Shield test, which just received FDA approval, could make it a lot more affordable to screen for the disease.

Colorectal cancer (CRC), more commonly called colon cancer, is currently the second-leading cause of cancer-related death in the U.S. But studies find it’s also highly treatable, especially if it’s caught early. Now, a new blood test might make it much easier (and cheaper) to screen for signs of colon cancer.