Renocel 4000 Renocel 4000 is an epoetin alfa injection used to support red blood cell formation when the body is unable to produce sufficient amounts on its own. By encouraging the bone marrow to make more red blood cells, it helps manage certain types of anemia, particularly anemia associated with chronic kidney disease and selected medical treatments. The product shown is supplied as a single-dose prefilled syringe and is intended for subcutaneous or intravenous administration under medical supervision.