Hematology
White blood cells
The total count of immune cells circulating in your blood.
Unit 10^9/LTypical adult range 4–11 10^9/L
What it is
The total count of immune cells circulating in your blood.
Why it matters
It is a broad alarm rather than a diagnosis: it rises with infection and inflammation, and falls with some medications and viral illnesses.
Reading the number
The differential underneath it carries most of the meaning. A modest rise just after an infection or hard exercise is expected.
What moves it
recent infectionrecent exercisestresssteroid medicationsmoking
When to raise it
Worth discussing a value well outside the range that holds on a repeat test.
Also known as
On a report in another language.
A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under White blood cells.
LeucócitosLeukotsüüdidLeukozytenLeucocitosLeucocytesWBCContagem de Leucócitos
Catalog entry last updated 2026-08-27. Browse all 165 metrics.