White blood cell count and differential

White blood cell count and differential is a topic covered in the Guide to Diagnostic Tests.

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Test/Range/Collection

White blood cell (WBC) count and differential, blood

Reference ranges are age- and laboratory-specific

Adult ranges: WBC 4.5–11.0 × 103/mcL; differential: segmented neutrophils 50–70%; band neutrophils 0–5%; lymphocytes 20–40%; monocytes 2–6%; eosinophils 1–4%; basophils 0–1%.

Panic: WBC <1.5 × 103/mcL and/or ANC <0.5 × 103/mcL

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