<unk>  <unk> , as well as various types thereof <unk> -CV or RCDW and<unk> -SD), is a measure of the range of variation of<unk><unk> <unk>  (RBC) volume that is reported as part of a standard complete<unk>  count.<unk><unk> <unk> s have an average volume of 80-100 femtoliters, but individual<unk>  volumes vary even in healthy<unk> . Certain disorders, however, cause a significantly increased variation in<unk>  size. Higher<unk>  values indicate greater variation in size. Normal reference range of<unk> -CV in human<unk><unk> <unk> s is 11.5–15.4%. If anemia is observed,<unk>  test results are often used together<unk>  mean corpuscular volume (MCV) results to determine the possible causes of the anemia. It is mainly used to differentiate an anemia of mixed causes from an anemia of a single cause. Deficiencies of Vitamin B12 or folate produce a macrocytic anemia (large<unk>  anemia) in which the<unk>  is elevated in roughly two-thirds of all cases. However, a varied size<unk>  of<unk><unk> <unk> s is a hallmark of iron deficiency anemia, and as such shows an increased<unk>  in virtually all cases. In the case of both iron and B12 deficiencies, there will normally be a mix of both large<unk> s and small<unk> s, causing the<unk>  to be elevated. An elevated<unk>  <unk><unk> <unk> s of unequal sizes) is known as anisocytosis. An elevation in the<unk>  is not characteristic of all anemias. Anemia of chronic disease, hereditary spherocytosis, acute<unk>  loss, aplastic anemia (anemia resulting from an inability of the bone marrow to produce<unk><unk> <unk> s), and certain hereditary hemoglobinopathies (including some cases of thalassemia minor) may all present<unk>  a normal<unk> .
Red blood cell distribution width
Mean corpuscular hemoglobin
Mean platelet volume
Mean corpuscular hemoglobin concentration
Transferrin saturation
Total iron-binding capacity
Hematocrit
Red blood cell indices