Because anemia can have many causes

Because anemia can have many causes, other possibilities must be ruled out first before a diagnosis of CKD anemia can be made. Basic workup should include complete CBC count with differential, iron studies (ferritin, serum Fe, and total iron binding capacity, reticulocyte count, and guaiac test. Other blood tests such as thyroid-stimulating hormone (TSH), B12, and folate levels and a hemolysis panel (lactate dehydrogenase, haptoglobin), should be obtained if the history suggests these disorders, however, on top of these tests that may be conducted, a peripheral blood smear showing normocytic red blood cells with normochromic pattern would favor the diagnosis of anemia secondary to chronic kidney disease (Talierco,2010).