I just had occasion for a GI consult on another issue, and because this issue is a hot topic on Connect I asked why they start with these 2 tests. Her reply was that it is protocol because over 70% of anemia cases show a bleed in one of the 2 tests, even now, so it needs to be addressed. Once that is ruled out, they look for other causes. She said if they give iron or blood transfusions without determining a cause, and the patient feels better, even temporarily, they go away without an accurate diagnosis and may not come back. This can be life threatening.
Just one view "from the trenches."
Sue