And in their meta analysis of erythropoietin resistance, authors used diverse definitions for erythropoietin resistance in patients who were not malnourished nor suffering from bleeding disorders including among others, ≥ 450 IU/kg/week intravenous or ≥ 300 IU/kg/week subcutaneous erythropoietin, and ≥ 1.5 μg/kg/week of darbepoetin [28]. Here, EPO is linked to hemorrhagic disease.