What CBC pattern is typically seen in chronic kidney disease-related anemia?

• A. Normocytic, normochromic anemia
• B. Microcytic anemia
• C. Macrocytic anemia
• D. Hemolytic anemia

Answer: (A)

In chronic kidney disease–related anemia, the main problem is reduced erythropoietin production by the damaged kidneys. Erythropoietin normally stimulates the bone marrow to make red blood cells, so when its supply falls, the body makes fewer RBCs but the ones that are produced remain normal in size and hemoglobin content. That yields a normocytic, normochromic pattern on the CBC — meaning the MCV is normal and the red cells aren’t unusually pale or dark per cell.

This differs from other patterns: microcytic anemia (low MCV) suggests iron deficiency or thalassemia, macrocytic anemia (high MCV) points to B12 or folate deficiency or other causes of enlarged RBCs, and hemolytic anemia often shows signs of increased RBC destruction with reticulocytosis and abnormal smear findings. In CKD, the hallmark CBC pattern is normal-sized, normal-colored red cells with overall low RBC count due to underproduction from low EPO.