The normal range for neutrophils is 1.5 to 8.0, or 1,500 to 8,000 per cubic millimeter, according to MedicineNet. This represents the number of white blood cells that are neutrophils. Typically, 50 to 80 percent of human white blood cells are neutrophils, states the Encyclopedia Britannica.
Although not within the normal range, neutrophil levels between 500 and 1,500 per cubic milliliter are considered safe, reports MedicineNet. Activities are not restricted based on this information alone. However, a reading less than 500 is low. Precautions must then be taken to prevent infection, such as avoiding cut flowers and soil, taking showers instead of baths, keeping away from farm animals and birds, and not using contact lenses, the University of Pittsburgh Medical Center advises.