What is the normal range for a white blood cell count indicating no infection?

The normal range for a white blood cell count indicating no infection is generally recognized as between 4,500 and 11,000/mm3. This range is crucial for assessing a patient’s immune status and determining the presence of infections or other medical conditions.

A white blood cell count lower than 4,500/mm3, known as leukopenia, may suggest a weakened immune system or a variety of medical conditions. Conversely, a count exceeding 11,000/mm3, termed leukocytosis, often indicates an inflammatory response or infection.

The other ranges provided are either too low or too high, which would not be considered typical for a healthy individual without infection. Hence, the range of 4,500-11,000/mm3 is essential for clinicians to evaluate the immune response accurately.