Features: No organic disease, white blood cells increase temporarily, mostly due to the leukocytes from the marginal pool entering the circulating pool, and can return to normal after the inducement is removed.

Age factor: Newborns are higher than adults

Time difference: Afternoon is higher than morning

menstrual cycle

Other cases

Acute infection or inflammation: pyogenes are most common

tissue damage and necrosis

Within 1-2 hours of acute blood loss, WBC rises rapidly, especially internal bleeding, which may be related to the transient hypoxia caused by internal bleeding.

acute hemolysis

acute poisoning

Non-hematopoietic malignancies

The patient's peripheral blood mainly showed lobulation and an increase in rod-shaped granulocytes (the increase in rod-shaped granulocytes was more significant).

Blood diseases: mostly hematopoietic stem cell diseases

certain blood diseases

Physical and chemical damage

Mononuclear-phagocytic system hyperactivity

autoimmune disease

Infectious diseases