Normocytic Anemia
Reticulocyte Count
< 3%
Early-stage anemia chronic disease
↑ferritin (> 100 ng/mL)
Common cause: Chronic inflamm. (e.g. RA)
Blood loss < 1 week
Early-stage Fe deficiency
Aplastic anemia
Renal disease
> 3%
RBC Defect
Extrinsic
Blood loss > 1 week
Immune hemolytic anemia
Micro/macroangiopathic hemolytic anemia
Malaria
Intrinsic
Membrane defect
Hereditary spherocytosis
Hereditary elliptocytosis
Paroxysmal nocturnal hemoglobinuria
HgB abnormal
Sickle cell Disease
Enzyme Deficiency
G6PD
Pyruvate kinase