Daniel Chung, MD
Colonoscopy for colorectal cancer screening may not be a thing of the past yet, but two noninvasive screening tests are touting new data showing rates of sensitivity and specificity that are gaining on the gold-standard screening modality. New data on the cell-free DNA blood-based screening test Shield (Guardant Health) put it in the level of other noninvasive screening tests, researchers said, and improved metrics—including fewer false positive scores—of the