question: Hi. Is it normal to have blood present in your stool after having an angiogram? They found that my mother has a leaking mitral valve, which is being treated with medication. The other procedure was having a renal stent inserted into the main artery to the kidney. The angiogram was done 6 days ago & the stent 4 days ago. Tonight she has found dark red blood in her stool. Is this normal?