<a href=https://aprednisonen.com/>prednisone for poison ivy</a> Presence of occult blood in stool Irondeficient anemia No Yes Patient age Colonoscopy Positive Negative Clinical follow up repeat guaiac test Upper GI symptoms Treat Upper endoscopy No Yes Colonoscopy Colonoscopy plus upper endoscopy Diseases of the Gastrointestinal System DiSeaSeS of the GaStrointeStinal SyStem l