Patients with colorectal polyps removed endoscopically (polypectomy, endoscopic mucosal resection, underwater endoscopic mucosal resection, endoscopic submucosal dissection) may experience delayed post polypectomy bleeding. The incidence is about one in 40 cases. There are risks factors for this complication, depending on the polyp type, patient demographics and co-morbidities and polypectomy technique. There are meta-analysis and nomograms for risk prediction available. We will try to predict delayed post polypectomy bleeding by using FIT (fecal immunochemical test), with a cut-off adapted to detect post polypectomy bleeding, administered daily for 2 weeks after polypectomy.