High white blood cell count

High white blood cell count, an increase in disease-fighting cells, is a reaction to severe infections or the result of a disorder boosting cell production.

Low white blood cell count

Low white blood cell count, a decrease in disease-fighting cells, usually indicates overwhelming infection or a condition disrupting white blood cell production.


Neutropenia is a low count of neutrophils, disease-fighting white blood cells. Many factors can inhibit neutrophil production, exhaust neutrophil supplies or destroy them.

July 09, 2014