White Blood Cell (WBC) Count, Total

How to Cite This Chapter: Don-Wauchope A, Chetty VT, Ivica J, Kavsak P, Khan WI, Lafreniere M, Nouri K, Solnica B. White Blood Cell (WBC) Count, Total. McMaster Textbook of Internal Medicine. Kraków: Medycyna Praktyczna. https://empendium.com/mcmtextbook/chapter/B31.1269.3.7.27.10. Accessed May 26, 2024.
Last Updated: May 9, 2022
Last Reviewed: May 9, 2022
Chapter Information

For a brief introduction and guide to abbreviations, see Laboratory Tests: General Remarks.

Analyte [material]

White blood cell (WBC) count, total

Reference range, target level, or decision threshold

4000-10,000/microL (4-10 Giga/L)

Interpretation of results

When analyzing total WBC count, consider changes in WBC subtypes:

↑ Increased WBC subtype count (see Neutrophils or Lymphocytes) or presence of abnormal cells (immature neutrophils [left shift], leukemic cells, lymphoma cells)

↓ Decreased counts of the largest WBC subtypes: neutrophils (see Neutrophils) or lymphocytes (see Lymphocytes)

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