Why isn’t erythropoietin measured to monitor erythropoietin drug therapy?
It is not used because it is the effect on the bone marrow – reflected by increased RBC and reticulocyte production and increasing hemoglobin – that is important in the resolution of anemia, not the concentration of erythropoietin in the blood. The amount needed will vary from person to person depending on their condition and the responsiveness of their bone marrow.
