Each person’s physical condition is different, and you can’t judge whether there is any danger purely based on the white blood cell 2800. The normal value of white blood cells is 4000 to 10000/mm^3, but each person’s physical condition is different, and can not judge whether there is any danger purely from the value. 1. Some people, such as those with poor resistance, malignant tumors, and those with metabolic abnormalities, may be in danger if their white blood cell count is as low as 4000/mm^3, which may be manifested by chills and high fever, etc. However, some people may be in danger if their white blood cell count is as low as 1000/mm^3. However, some people may be in danger only if their white blood cells are as low as 1000/mm^3. 2. White blood cells are an important part of the body’s defense, and a decrease in white blood cells generally indicates the presence of infections. In daily life, it is important to drink more water, maintain good habits, and ventilate the room to avoid bacterial and viral infections. If you have low white blood cells, you should consult a doctor in time to find out the cause and treat it actively.