The number of white blood cells in the body increases depending on the age of the person. The white blood cell count in newborns is (15-20)x10/L; in children six months to two years old, it is (11.5-12)x10/L; and in adults, it is (4-10)x10/L. Anything above or below these normal ranges is considered abnormal.
The most common causes of leukocytes in clinical experience are infectious diseases, especially acute bacterial infections such as acute appendicitis, acute tonsillitis, and acute purulent skin infections. The most common causes of a decrease in white blood cell count are viral infections such as influenza virus and rubella virus, as well as certain hematologic disorders, especially aplastic anemia, and also after chemotherapy for malignant tumors.
The normal white blood cell count is between 4,000 and 10,000, which is an indicator of the severity of the infection, and an elevated white blood cell count indicates a serious infection. The number of white blood cells is generally proportional to the severity of the infection. The number of cells is usually proportional to the severity of the infection, but older people have a reduced ability to respond, and sometimes the elevated white blood cells are not very noticeable even in the presence of a serious infection.
In addition to infections, elevated white blood cells can also be caused by physiological factors, such as strenuous exercise or emotional stress. In addition to elevated white blood cells, there are also some causes of lower white blood cells. The most important thing is that you can get a good idea of what you want to do.