What is White Blood Cell Count?
White blood cell counts are a good indicator of immune system function. Elevated white blood cell count is an indication of bacterial or viral infection, though bacterial is more common. Other causes of elevated counts include autoimmune disorder, deficient immune system and blood disorder. Common symptoms of high white blood cell count include headache, dizziness and possible localized symptoms of inflammation is present.
Patients with lower than normal white blood cell counts are also considered unhealthy. Low counts can be contributed to sepsis, autoimmune disorders, lymphoma or conditions that affect bone marrow function.
The test is nearly always ordered as part of a complete blood count or CBC. CBCs can be ordered as part of a yearly physical exam or as a diagnostic tool.
Normal Value Range
- Negative Pregnancy Adult: 3.5 to 9.1X103/mm3X103/µl or 3.5 to 9.1X109/L
- Pregnancy Trimester One: 5.7 to 13.6X103/mm3X103/µl or 5.7 to 13.6X109/L
- Pregnancy Trimester Two: 5.6 to 14.8X103/mm3X103/µl or 5.6 to 14.8X109/L
- Pregnancy Trimester Three: 5.6 to 16.9X103/mm3X103/µl or 5.6 to 16.9X109/L