The primary cause of anemia in chronic kidney disease (CKD) is:

All are causes of anemia in CKD, the primary cause is insufficient production of erythropoetin by the diseased kidneys. Other causes are; Bleeding diathesis Hyperparathyroidism/bone marrow fibrosis Folate or vitamin B12 deficiency Hemoglobinopathy Ref: Harrisons principles of internal medicine, 18th edition, Page: 2316.