- Renal anemia due to CKD (stage 3 and 4) not on dialysis assessed by medical history and Creatine Clearance (CLCR) between 15 to 59 mL/min ± 10 % (ie CLCR between 13 - 65 mL/min) estimated at the pre-study visit from the creatinine concentration measured in serum (Modification of Diet in Renal Disease (MDRD) formula)