Introduction Erythropoietin (EPO) is a sialoglycoprotein hormone (MW 34000) produced by peritubular cells of the kidney that is essential for normal erythropoiesis. NOTE – Erythropoiesis (from Greek ‘erythro’ meaning “red” and ‘poiesis’ meaning “to make” is the process which produces red blood cells (erythrocytes), which is the development from erythropoietic stem cell to mature red […]