There's even a urine test for colon polyps (https://www.prlog.org/12825062-first-only-urine-test-for-colon-polyps-expands-across-the-us.html https://www.prlog.o

There's even a urine test for colon polyps (https://www.prlog.org/12825062-first-only-urine-test-for-colon-polyps-expands-across-the-us.html https://www.prlog.org/12825062-first-only-urine-test-for-col...)