65 yr old male. obese, diabetic and hypertensive.normal endo and colonoscopy repeatedly,  blood loss requiring transfusion every 1 to 2 weeks. 1 kidney removed because of a large mass inside that turned out not to be malignant, other kidney substantially reduced function, currently on dialysis. has v fib, had a couple of cardiac oblation. do you have any thoughts on potential causes of unexplained blood loss? thank you Rob Rieder brother-in-law of the patient.
HIT hank for asking to ChatDoctorI can understand your query you do have multiple medical conditions but looking to your history it could be said that it must be some micro oozing of blood in you GI tract that need to be investigated, and the best primary test is stool examination, I would advise you to get it done, have nice time.