It may reveal both an excess of white blood cells (leukocytosis) or a decrease (leukopenia), and a low red blood cell count (anemia) and low platelets (thrombocytopenia) can also be commonly seen.
It can indicate an overabundance of white blood cells (leukocytosis) or a deficiency (leukopenia), and low red blood cell counts (anemia) and low platelet counts (thrombocytopenia) are frequently observed.