Generally, the normal white blood cell count in adults is around (4~10)×10^9/L. Higher counts may be associated with bacterial infections, trauma, poisoning, hematologic disorders, and so on.
Leukocytes are a group of cells with different stages of development and differentiation, including lymphocytes, neutrophils, monocytes, eosinophils and basophils.
1. The most common cause of a high white blood cell count is bacterial infection. When bacteria invade the body, granulocytes from the bone marrow are released into the peripheral blood, causing an increase in white blood cells in the peripheral blood.
2. The next most common causes are poisoning, trauma, and acute blood loss, which are due to the stress response of the body, causing an increase in the white blood cell count. In this case, the increase in the number of leukocytes and neutrophils can reach the level of a leukemia-like reaction when there is thoracic, abdominal and intracranial hemorrhage and massive acute hemolysis.
3. High white blood cell counts may also occur in hematologic disorders including acute leukemia and lymphoma.
High white blood cell counts are mainly influenced by the number of neutrophils, and there are limitations in determining the clinical significance of white blood cell counts alone. Further examination should be conducted under the guidance of a physician, combined with relevant information to make a comprehensive judgment and receive standardized treatment.