Clinical Research Directory

Inclusion Criteria: 1. Patients age 40-75 years old, regardless of gender 2. Patients presenting for physical examination, colorectal cancer screening or diagnosis 3. Patients voluntarily signs an informed consent form Exclusion Criteria: 1. Unable to cooperate ot tolerate colonoscopy 2. History of inflammatory bowel disease 3. History of colorectal cancer 4. Previous colorectal surgery 5. History of recurrent constipation 6. Taking anticoagulant and antiplatelet drugs berfore procedure 7. High risk conditions such as severe cardiovascular and cerebrovascular diseases, severe anemia, or uncorrected infections 8. Pregnant or lactating women Researchers concluded that patient was not suitable to participate in this trial.