Doctors often count the amount of neutrophils in a person's blood to see if he or she if heas a certain illness. why would this be a useful test?

Neutrophils are a type of white blood cell that plays a crucial role in fighting off infections. By counting the number of neutrophils in a person's blood, doctors can assess the body's immune response and determine if there is an ongoing infection. Abnormal neutrophil levels can indicate various conditions, including bacterial infections, inflammation, or stress on the bone marrow.