If colon or GI is not the cause then a hematologist may need to look for causes such red cell destruction or lack of production. Has your doctor run tests for hemolytic
anemia? It may be autoimmune.

I have the same situation! I am severely anemic and had to get a emergency blood transfusion. It never raised my anemia and now amd getting iron infusions. I also have crohns disease and the drs thought the blood loss might be from that. I got MRIs and cat scans to try and find the source of the blood loss. Long story short, the tests did not show the source of where the blood loss was coming from. They still don't have a anwser for me..

@rktdog
I had iron deficiency but it was due to blood loss. There are different types of anemia and hope you get answers soon so you get the right treatment.

1. https://www.mayoclinic.org/diseases-conditions/anemia/symptoms-causes/syc-20351360
2. https://www.mayoclinic.org/symptoms/low-hemoglobin/basics/causes/sym-20050760
3. https://www.verywellhealth.com/low-iron-level-causes-8662541
4. https://my.clevelandclinic.org/health/diseases/3929-anemia
5. https://www.ynhh.org/articles/what-is-anemia

Yes I have seen it with anemia of chronic disease. Follow up with a hematologist or blood pathologist best.

I had this for years. Scopes, turned up nothing. I finally got a hemotologist to look at thing while it was happening. 2 months ago I was diagnosised with Meylofibrosis. Im just starting treatments . Its going to be a long road.
I suggest getting a bone marrow biopsy to rule out any disorders .