We can explain to you the various possible causes of a high white blood cell (WBC) count, but you need to be investigated by your own doctor, who knows you, your medical history and can treat you appropriately only after a diagnosis has been made.

Causes of High White Blood Cell Count
White blood cells (leukocytes) help fight infection in your body. A normal white blood cell count is between 4,500 and 10,000 cells per microliter. A high white blood cell count (leukocytosis) isn't a specific disease. But it may indicate an underlying problem that requires medical evaluation. There are several possible causes for a high white blood cell count.
Causes of a high white blood cell count include: Infection - Severe physical or emotional stress - Use of certain medications, such as corticosteroids, antibiotics or anti-seizure drugs - Chronic bone marrow diseases such as a myeloproliferative disorder ( The chronic myeloproliferative disorders are polycythemia vera (PV), myelofibrosis (MF), essential thrombocythemia (ET), chronic myelogenous leukemia (CML) ) - Acute or chronic leukemia - Tissue damage, such as from burns.

The tests performed to find the cause for an elevated white blood cell count will vary depending on the individual, his/her clinical presentation, and his/her medical history. Sometimes blood tests or an investigation of the medications an individual is taking may be enough to determine the cause. Individuals who present with symptoms or other abnormal laboratory tests that are concerning for a bone marrow disorder may require a bone marrow biopsy, a procedure used to remove soft tissue from inside the bone, for further analysis.

If you are concerned about your blood tests, talk to your doctor to find out what tests might be appropriate for you.