The normal range of leukocyte count in adults is (4-10) × 109/L. When routine blood tests indicate that the leukocyte count is higher than 10 × 109/L, it is considered higher than normal and is called leukocytosis. A high white blood cell count in routine blood tests indicates that the stable state of the body has been disrupted for the following two reasons: 1. Physiological leukocytosis: a physiological reaction that can lead to transient leukocytosis after strenuous exercise or labor, during pregnancy and childbirth, or in severe cold or heat. The increase in leukocytes due to the above causes is low, and the number of leukocytes can return to normal after removing the adverse external environment.
2, pathological leukocytosis: leukocytes is a general term for a class of cells in the blood, including neutrophils, eosinophils, basophils, lymphocytes, etc. An increase in the number of any of these will lead to an increase in the total number of white blood cells. Acute infections caused by various germs such as pneumonia and appendicitis, serious tissue injuries such as major surgery and myocardial infarction can cause an increase in neutrophils, and various causes such as leukemia and malignancy can lead to an increase in abnormal leukocytes. Various viral infectious diseases such as chickenpox, hepatitis, and recovery from certain infectious diseases can lead to an increase in the number of monocytes in patients. In addition, certain allergic diseases such as bronchial asthma, urticaria, and parasitic infections are causes of elevated eosinophilia.
It can be seen that blood tests can indicate an increase in leukocytes for a variety of reasons, including physiological or disease, and should be combined with the patient’s medical history and relevant examinations and tests to make a clear diagnosis and provide timely and accurate treatment.