WBC Count blood test
The cells of the immune system.
- Typical range (adult men)
- 4.5–11 K/µL
- Panel
- Blood Health
- Also called
- White blood cell count, Leukocytes
Reference ranges vary between labs; use the range on your own report. Results need to be read by a doctor alongside your symptoms and other tests.
Why it’s tested
A general check for infection, inflammation and immune health.
What can raise it
- Infection or inflammation
- Hard exercise or stress
- Steroid medications such as prednisone
What can lower it
- Some viral infections
- Some medications
- Bone marrow problems
Getting an accurate result
- Test in the morning, especially for hormones, which run highest early in the day.
- Stay hydrated, and test at the same lab and time of day each time so results compare fairly.
Other blood health tests
Questions
What is a normal WBC Count level?
A typical adult male reference range is 4.5–11 K/µL. Ranges differ for women, by age and between labs, so compare with the range printed on your report.
What does high WBC Count mean?
Common reasons include infection or inflammation, hard exercise or stress and steroid medications such as prednisone. One result outside the range isn't a diagnosis: a doctor will look at it with your other markers and history.
What does low WBC Count mean?
Common reasons include some viral infections, some medications and bone marrow problems.