White Blood Cell Count (WBC)
A white blood cell (WBC) count, also called a leukocyte count, is part of a complete blood count. It indicates the number of white cells in a micro liter (u1, or cubic millimeter) of whole blood.
WBC counts may vary by as much as 2,000 on any given day, due to strenuous exercise, stress, or digestion. The WBC count may increase or decrease significantly in certain diseases, but is diagnostically useful only when the patient's white cell differential and clinical status are considered
Procedure and posttest care
The WBC count ranges from 4,000 to 10,000/u1.
An elevated WBC count (leukocytosis) often signals infection, such as an abscess, meningitis, appendicitis, or tonsillitis. A high count may also result from leukemia and tissue necrosis due to burns, myocardial infarction, or gangrene
A low WBC count (leukopenia) indicates. bone marrow depression that may result from viral infections or from reactions, such as those following treatment with antineoplastics, ingestion of mercury or other heavy metals, or exposure to benzene or arsenicals. Leukopenia characteristically accompanies influenza, typhoid fever, measles, infectious hepatitis, mononucleosis and rubella.Interfering factors
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