A high white blood cell count is an increase in disease-fighting cells in your blood.

The exact threshold for a high white blood cell count varies from one laboratory to another. In general, for adults a count of more than 11,000 white blood cells (leukocytes) in a microliter of blood is considered a high white blood cell count.

A high white blood cell count is also called leukocytosis.

Dec. 17, 2015