What is the normal range for Absolute Neutrophil Count (ANC)?

The normal range for Absolute Neutrophil Count (ANC) is typically considered to be 2,500 to 7,000 neutrophils per microliter of blood, which translates roughly to 2,500-7,000. However, regarding the options provided, the choice indicating "500 and above" is the most accurate within the context of recognizing neutrophil levels above a recognized threshold necessary to maintain an adequate immune response.

An ANC of 500 or greater suggests a certain level of capacity to respond to infections, albeit lower than the full normal range. Values below this, such as those in the 250-500 range, point to neutropenia, a condition that indicates increased susceptibility to infections. Therefore, while 500 and above may not represent standard "normal" levels, it does denote a critical value to be aware of in clinical settings. In practice, maintaining an ANC above 500 is essential for patient safety, particularly for those undergoing chemotherapy or other treatments that may suppress bone marrow function.