What is the normal range for White Blood Cell (WBC) count?

• A. 3,000-6,000
• B. 5,000-11,000
• C. 4,000-10,000
• D. 6,000-12,000

Answer: (B)

The normal range for White Blood Cell (WBC) count is between 5,000 and 11,000 cells per microliter of blood. This range is essential because WBCs play a crucial role in the immune system, helping the body to fight infections and other diseases. Maintaining a WBC count within this range indicates a healthy immune response and overall health, as deviations can signify various medical conditions.

A count below this range may suggest leukopenia, which can be caused by factors such as bone marrow disorders, autoimmune diseases, or the effects of medications. Conversely, a count above this range might indicate leukocytosis, often associated with infections, stress responses, or hematological conditions. Therefore, the understanding of this normal range is important for the assessment of a patient's health status.