A healthy individual should have an absolute neutrophil count between 2,500 and 6,000, according to the American Cancer Society. A person's absolute neutrophil count is determined by multiplying their white blood-cell count by the percent of neutrophils found in one microliter of blood.
Neutrophils are a type of white blood cells. They are the cells that attack bacteria and other organisms that invade the body. Having an abnormally low number of neutrophils in the blood is called neutropenia, and it increases the risk of infection. Neutropenia is caused by several diseases or medical conditions that affect bone marrow, which is where white blood cells are produced.