What is the range for white blood cells (WBC) in x 10^9/L?

The normal range for white blood cells (WBC) in adults is typically considered to be between 4.0 and 11.0 x 10^9/L. This range is important because WBCs play a critical role in the body's immune response and can help indicate the presence of infections, immune disorders, or other medical conditions when outside of this range.

In your provided answer, the choice given does not accurately reflect this standard range, but rather falls outside of it. The range from 4.5 to 10.5 x 10^9/L, while it may appear reasonable, can overlook the broader normal limits that ensure the most comprehensive understanding in clinical settings. The normal range often varies slightly based on laboratory standards, but a wide acceptance of the range of 4.0 to 11.0 x 10^9/L makes it a crucial reference point for assessing WBC levels.

Understanding the typical range aids healthcare professionals in analyzing lab results effectively to provide proper patient care.