WBC Count
The total number of white cells.
A typical adult white blood cell (WBC) count is about 4.0–11.0 ×10⁹/L. Above is leukocytosis, below is leukopenia; infection, stress and medicines are the most common causes.
| Count (×10⁹/L) | Meaning |
|---|---|
| <4.0 | Leukopenia: viral infection, medicines, bone marrow causes |
| 4.0–11.0 | Typical range |
| >11.0 | Leukocytosis: infection, inflammation, stress, smoking, corticosteroid-type medicines |
- Pagana KD et al., Mosby's Diagnostic and Laboratory Test Reference
- NHS — Full blood count (FBC)
General information only; not diagnosis or treatment. Review your results with your clinician.
