A low<unk>  can be interpreted as identifying decreased production of<unk> .<unk>  can be normal even when<unk>  production is decreased (such as in iron deficiency) due to a calculation artifact.<unk>  can be elevated ("polychromatic") in hereditary spherocytosis, sickle cell disease and homozygous<unk>  C disease, depending upon the hemocytometer.<unk>  can be elevated in some megaloblastic anemias.<unk>  can be falsely elevated when there is agglutination of red cells (falsely lowering the measured RBC) or when there is opacifaction of the plasma (falsely increasing the measured<unk> . Causes of plasma opacification that can falsely increase the<unk>  include hyperbilirubinemia, hypertryglyceridemia, and free<unk>  in the plasma (due to hemolysis).
Mean corpuscular hemoglobin concentration
Total iron-binding capacity
Transferrin saturation
Mean platelet volume
Red blood cell distribution width
Hematocrit
Reticulocyte production index
Oxygen–hemoglobin dissociation curve