White blood cells and neutrophils high why

White blood cell elevation is divided into physiological and pathological, if neutrophils are also elevated at the same time, it is considered that the possibility of bacterial infection is relatively large, and it may also be related to hematopoietic system diseases. If accompanied by anemia, bleeding, fever and other symptoms, blood smear and molecular biology examination should be done, and bone marrow puncture examination should be done if necessary.