Erythropoietin is inhibited by
Glycoprotein hormone that controls erythropoiesis, or red blood cell production. Estrogen inhibits the erythropoietin whereas testosterone stimuates production . Ref: Ganong's Review of Medical Physiology; 24th edition; page no: 709
Estrogen
Progesterone
Thyroxine
Testosterone
Renal physiology