What unit is used to measure white blood cell count?

White cells are the first line of defense against invading organisms of the human body.

When your white blood cell count is high, it is telling you one of the following things:

1. Your body is fighting an infection

2. You are having an adverse reaction to a drug you're taking

3. You have an immune system disorder resulting in an increase in the production of white blood cells

4. You have a bone marrow disease causing the bone marrow to product high amounts of white blood cells.