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

The normal range for white blood cell (WBC) count is commonly cited as 4,500 to 10,000 cells per microliter of blood, which corresponds to the choice provided. This range is important in clinical practice because it helps healthcare providers assess an individual's immune status and overall health. A WBC count within this range indicates normal immune function, while counts outside of this range could suggest various medical conditions such as infections, inflammation, or hematological disorders.

Other ranges presented in the choices extend beyond the established normal limits. These variations might indicate conditions affecting bone marrow function or systemic diseases that could lead to elevated or decreased WBC counts. Understanding the correct normal range aids clinicians in making informed decisions about further testing or treatments needed for patients presenting with abnormal WBC levels.