Age

18–any

Sex

ALL

Healthy volunteers

Not accepted

Patient of one of the investigators for total colonoscopy (no prior colonic surgery);
Patient aged 18 years or older;
Patient classified as ASA 1, ASA 2, or ASA 3;
Not participating in any other current clinical trial;
Free, informed, and signed consent;
Patient affiliated with or a beneficiary of a social security scheme, according to Article L.1124-1 of the French Public Health Code;

Patient taking major psychotropic medications;
Patient with uncontrolled diabetes;
Patient with coagulation abnormalities preventing polypectomy: PT \<50%, Platelets \<50,000/mm³, current effective anticoagulation therapy (clopidogrel, prasugrel, or ticagrelor);
Patient referred for removal of a known polyp;
Chronic inflammatory bowel disease;
Known colonic stenosis;
Diverticulitis of less than 6 weeks duration;
Pregnant, parturient, or breastfeeding woman;
Patient deprived of liberty by administrative or judicial order, or under guardianship or limited legal protection;
Patient unable to understand the objectives and constraints of the study.

Study Comparing the Quality of Colon Cleanliness With Prepackaged LRD (Low-residue Diet) vs. Guided (POG).