My blood count was low last year. thought we had found the problem by having half of my colon removed   that had several polyps that could not be removed. had blood test recently blood is low still with iron def. was told CBC was low, NCB was low, and mch was low. I have no idea what this means or what could be causing this. I have an appointment with a doctor next week that did my colonnosopy. What should I be looking for?
Hello and thanks for the query, I am most concerned that you may still be losing some blood in the gastrointestinal tract.  This could be occurring in the large intestine or possible the small intestine.  Your doctor may consider a repeat colonoscopy or possibly a capsule endoscopy to evaluate your GI tract above the colon. Also, your doctor might request a reticulocyte count which will assess whether your bone marrow is generating red blood cells adequately.  If the iron level is still low you may benefit from intravenous iron infusions to restore your iron balance.  These are all things you might discuss at your upcoming appointment. Thanks again for the query, Please let me know if you have any additional specific concerns.