Fecal immunochemical testing (or FIT testing) replaces the older stool guaiac test in the recent colorectal cancer screening guidelines. What's the advantage to FIT testing? Is there a place for fecal DNA testing in the realm of colorectal cancer screening methods right now, or does this procedure need further revision? Host Dr. Mark DeLegge discusses the newest developments in colorectal cancer screening technologies with Dr. Douglas Rex, distinguished professor of medicine at Indiana University School of Medicine. Is CT colonography also a viable screening option?