what is the average white blood cell count in a human?
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The normal range for a white blood cell count in a healthy adult is between 4,000 and 11,000 WBCs per microliter (μl or mcL) or cubic millimeter (mm3) of blood, though this may differ between males and females, and healthy children and young people usually have more.
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Elevated white blood cell (WBC) count is a nonspecific marker of inflammation associated with immune system response to both acute and chronic infection and exposure to irritating and toxic exposures, such as tobacco smoke (1–4).
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Low white blood cell count. A low white blood cell count usually means your body isn't making enough white blood cells. It can increase your risk of all sorts of infections.
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An increase in the total number of white blood cells in the blood.
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A normal white blood cell count is more or less in the range of 5,000 to 17,000 (per microliter of blood), whereas an infection might cause an increase to something along the lines of 25,000, and leukemia, to 100,000 or more.
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Normal white blood cell counts are: 9,000 to 30,000/mm3 for newborns. 6,200 to 17,000/mm3 for children under 2 years old. 5,000 to 10,000/mm3 for children older than age 2 up to adults.
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A normal WBC is between 4,500 and 11,000 (some describe it as 4.5 to 11). Your WBC may go as low as 100 (commonly written as 0.1). The number of neutrophils you have is called an Absolute Neutrophil Count (ANC). A normal ANC is about 2500-7500 (commonly written as 2.5 to 7.5).
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White blood cells (WBCs) The most important infection-fighting WBC is the neutrophil (NEW-truh-fil). The number doctors look at is called your absolute neutrophil count (ANC). A healthy person has an ANC between 2,500 and 6,000. The ANC is found by multiplying the WBC count by the percent of neutrophils in the blood.
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Neutrophils are a type of white blood cell. In fact, most of the white blood cells that lead the immune system's response are neutrophils. There are four other types of white blood cells. Neutrophils are the most plentiful type, making up 55 to 70 percent of your white blood cells.
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Typically, white blood cell count is elevated during pregnancy, with the lower limit of the reference range being around 6,000 cells per μl and the upper limit around 17,000 cells per μl. The stress imposed on the body through pregnancy causes this rise in white blood cells.
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In the human adult, the bone marrow produces all of the red blood cells, 60–70 percent of the white cells (i.e., the granulocytes), and all of the platelets. The lymphatic tissues, particularly the thymus, the spleen, and the lymph nodes, produce the lymphocytes (comprising 20–30 percent of the white cells).
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The specific number for high (above normal) white blood cell count varies from one lab testing facility to another, but a general rule of thumb is that a count of more than 10,500 leukocytes in a microliter of blood in adults is generally considered to be high, while 4,500-10,500 is considered within the normal range.
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High white blood cell (WBC) count Though it varies between individuals, a high white blood cell count (leukocytosis) is usually considered to be anything above 11,000 cells per μl of blood in an adult. This can be related to: Infection. Bone marrow disease.
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On the day of birth, a newborn has a high white blood cell count, ranging from 9,000 to 30,000 leukocytes. This number falls to adult levels within two weeks. The percentage of neutrophils is high for the first few weeks after birth, but then lymphocyte predominance is seen.
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The total WBC count and neutrophil count in neonates younger than 1 week are physiologically higher than those of children and adults and the counts usually range from 9,000 to 30,000/mm3 [1].
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On the day of birth, a newborn has a high white blood cell count, ranging from 9,000 to 30,000 leukocytes. This number falls to adult levels within two weeks.
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The white blood cell count (WBC) is used as part of a full complete blood count (CBC) to: Screen for a wide range of diseases and conditions. Help diagnose an infection or inflammatory process or other diseases that affect the number of WBCs, such as allergies, leukemia or immune disorders, to name a few.