The patient has a total white blood cell ( WBC )count of 600 cells/microliter.The differential shows a normal neutrophil level of 70% with 5% bands.This patient

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The differential demonstrates the percentage of each type of WBC circulating in the bloodstream.The absolute neutrophil count is calculated by multiplying the total WBC count (without a decimal point)by the percentages (with decimal points)of polymorphonuclear leukocytes (polys; also called segs or neutrophils)and bands (immature neutrophils).
WBC $\times$ (segs + bands)
600 * (0.70 + 0.05)
600 * 0.75 = 450 cells/microliter
This gives an actual number that is translated into the categories of mild,moderate,or severe neutropenia.Neutropenia is classified based on the patient's predicted risk for infection: mild (1000-1500 cells/microliter),moderate (500-1000 cells/microliter),and severe (<500 cells/microliter).

The Patient Has a Total White Blood Cell ( WBC