A high white blood cell count means that there is an abnormal white blood cell count and it is an elevated state, which mainly refers to the results in routine blood, or blood cell analysis. The first item is the white blood cell count, which can generally be between (3-5) x 10^9/L, with a normal range of (4-10) x 10^9/L or (3.5-9.5) x 10^9/L. An elevated white blood cell count is one that exceeds the upper limit of normal, and the most likely cause of exceeding the upper limit of normal is an infection, such as a septic coccus infection or a viral infection, all of which may result in an elevated white blood cell count. The most likely cause of an elevated white blood cell count is infection, such as septicemia or viral infection. For lymphocytic leukemia and B-cell leukemia, it is possible to have a significantly higher white blood cell count, but the two may be slightly different. In the case of infections, they are often accompanied by symptoms such as fever, and the white blood cell count will gradually decrease to the normal range after effective treatment. In the case of leukemia, however, the elevation may be higher and the white blood cell count will probably not drop after treatment.