The gold standard for colon cancer screening is the colonoscopy. It's a very good test, because you can prevent colon cancer as well as diagnose colon cancer. If someone has a polyp, then you can basically find that, remove that and prevent the disease. If you find an early stage cancer, then again you can find it, mark it, know where it's at. There are some other tests including a FIT test: that is, a stool card that looks for things such as blood. It also looks for different markers that come off of tumors or advanced polyps. It's not the gold standard because it's not as specific and sensitive as a colonoscopy, but again, it is a way of screening for colonoscopy. The fecal test, or the old test where you're just looking for blood, that's again a very old test. It has kind of fallen out of favor because it is not very specific or sensitive for colon cancer screening.
