 This study is a prospective evaluation of patients with occult hidden GI bleeding without iron deficiency. Such patients usually undergo a diagnostic colonoscopy as a standard of care. The study is aimed to determine any UGI-source of occult bleeding and to correlate UGI symptoms with findings. Therefore, EGD is being offered to such patients as part of research. We proposed to enroll 200 consecutive patients referred to our GI-unit for expedited diagnostic colonoscopy for positive FOBT. 