What is the ANC threshold below which neutropenia is defined?

Neutropenia is defined by an absolute neutrophil count (ANC) that falls below a certain threshold, which is critical for assessing a patient's risk of infection, especially in those undergoing chemotherapy. The threshold for defining neutropenia is set at 500/mm³. When the ANC drops to this level or below, it indicates a significantly increased risk of infections due to the body’s decreased ability to fight off pathogens.

This standard value is based on clinical evidence and practices established by health organizations, highlighting the importance of monitoring ANC levels in patients undergoing treatments that may compromise their immune function. Recognizing neutropenia at this threshold allows healthcare providers to take appropriate measures, such as prophylactic antibiotics or growth factor support, to mitigate the risk of infections and manage the patient's care effectively.