Diagnostic Accuracy of a Panel of Bacterial Gene Markers (M3) for Colorectal Advanced Neoplasia

This study is testing a new stool-based (fecal) test that looks at specific bacterial markers to detect colorectal cancer or large precancerous polyps. It aims to see how accurately this test can find problems before a colonoscopy is performed. **You may be eligible if...** - You are 18 years or older - You are scheduled for a colonoscopy for cancer screening, polyp follow-up, or symptoms like anemia or changes in bowel habits - You are willing to provide written consent **You may NOT be eligible if...** - You have a condition that makes colonoscopy unsafe (e.g., bowel obstruction, unstable heart or lung problems) - You are on blood thinners that cannot be stopped, or have active gastrointestinal bleeding Talk to your doctor to see if this trial is right for you.