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Which range of white blood cell counts is typical in healthy adults?
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white blood cell
Blood is made up of multiple components, including red blood cells, white blood cells, platelets, and water-rich plasma.
In a healthy adult, the typical white blood cell count ranges from 4,500 to 11,000 cells per cubic millimeter of blood.12
It is important to note that these values are not static; they can fluctuate throughout the day based on an individual's physiological state. For instance, white blood cell counts generally decrease during periods of rest and increase during exercise. Additionally, factors such as age, sex, and overall health can influence these readings.12
When a count falls outside of this typical range, it may indicate an underlying health issue. An abnormally high count is referred to as leukocytosis, while an abnormally low count is known as leukopenia.13