LEUKOCYTOSIS

LEUKOCYTOSIS is a topic covered in the Harrison's Manual of Medicine.

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Approach to the patient

Review smear (are abnormal cells present?) and obtain differential count. The normal values for concentration of blood leukocytes are shown in Table 63-1.

TABLE 63-1: NORMAL VALUES FOR LEUKOCYTE CONCENTRATION IN BLOOD
Cell TypeMean, cells/μL95% Confidence Intervals, cells/μLTotal WBC, %
Neutrophil36501830–725030–60%
Lymphocyte25001500–400020–50%
Monocyte430200–9502–10%
Eosinophil1500–7000.3–5%
Basophil300–1500.6–1.8%

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