I am post divaticular bleed that resulted in treatment to include 2 units of blood. 3 days post tx hemo incr from 7-9 but still have black stool x 1wk?

Black stool: Bleeding from diverticulosis of the descending colon causes red blood in the stool. Black stools are generally caused by bleeding from the upper gi tract such as occurs in inflammation of the stomach(gastritis) or peptic ulceration of the stomach or duodenum. Black stools also occur when taking iron supplement or peptobismol. A stool test can tell if you're still bleeding. See a gastroenterologist

This is typical : After a GI bleed we will see black stool for a few days. However if it persists I hope you’re following up with your physician.