White blood cells
A white blood count measures the number of white blood cells (WBCs) in your blood. White blood cells, also called leukocytes, are part of your immune system. They are a type of blood cell made in your bone marrow and found in your blood and lymph tissue (part of your immune system). If you are injured or get sick, the white blood cells will travel through your bloodstream and tissues to where they are needed.
A white blood count is most often used to help diagnose or monitor disorders related to having a high white blood cell count or low white blood cell count.
Source: MedlinePlus, U.S. National Library of MedicineNormal range
38 published ranges, each from a named source 411 ×10⁹/L drawn: all ages · American Board of Internal Medicine (Laboratory Test Reference Ranges)
- Normal
- 4–11 ×10⁹/L
- Normal
- 0–5 cells/µL
- Female
- 3.4–9.6 ×10⁹/L
- Male
- 3.4–9.6 ×10⁹/L
All source ranges (38)
What an abnormal result can be associated with
- A high result
- Increased total leukocyte count
- A low result
- Decreased total leukocyte count
details
- Sample
- Whole blood · LOINC
- Part of
- CBC panel
- Code
- LOINC 6690-2 · ×10⁹/L
- Also known as
- Leukocytes, Leukocyte, Leuc, Leuk, Lkcs
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