Leukocyte 11.27, in clinical terms, means a white blood cell count of 11.27 x 10⁹/L. Whether this condition is serious or not is mainly related to the cause of the change in the white blood cell count. If the cause is physiologic, such as strenuous exercise, it is not serious. However, if the cause is pathologic, such as an infection, it is relatively serious. The normal range of white blood cells is 4 to 10 x 10⁹/L, so the value is high when 11.27 x 10⁹/L is present. If it is caused by physiological reasons, such as strenuous exercise, full meal, etc., it will gradually return to normal with the passage of time and the adjustment of the organism, and is usually not serious. However, if it is caused by pathological reasons, such as infection, leukemia, etc., at this time, the body will have fever, bleeding and other symptoms, which is not good for the health of the body, then it is relatively serious.