What is the normal white blood cell (WBC) count range in mm3?

The normal white blood cell (WBC) count range in mm³ for a healthy adult typically falls between 5,000 and 10,000/mm³. This measurement is important as WBCs play a critical role in the immune system, helping the body fight infections and diseases. A count within this range indicates a well-functioning immune system under normal physiological conditions.

The values outside of this range, such as those presented in the other choices, suggest either leukopenia (low white blood cell count) or leukocytosis (high white blood cell count), which may indicate an underlying health issue. Monitoring WBC counts can be crucial in diagnosing and managing various medical conditions. Therefore, maintaining a count within the established normal range is integral to assessing overall health and immune function.