Whether leukocytes 16.63×10^9/L need to be transfused should be considered in conjunction with the symptoms of the condition, and if it is an infectious disease, it can be treated with fluids if necessary. The normal value of white blood cells in normal people is (4~10)x10^9/L, white blood cells are the defense cells in the body, if the routine blood test, the number of white blood cells is 16.63×10^9/L is suggestive of bacterial infection, bacterial infection in the body, should be combined with the specific symptoms of the cause and symptomatic treatment, you can first use medication, if the effect is not good, it can be turned to intravenous infusion for treatment. In addition to infectious diseases, some blood system diseases such as leukemia can also lead to an increase in the number of white blood cells, at which point chemotherapy and other treatments may be required. It is advisable to consult your doctor and take treatment under his supervision if you need to take fluids for leukocytes 16.63×10^9/L.