Leukocyte 3.81 should refer to a white blood cell of 3.81×10^9/L. If there is no special discomfort, the general condition can be temporarily without medication; if there is discomfort, further examination is needed to evaluate whether medication is needed.
Clinically, the normal range of white blood cells is (4~10)×10^9/L, and lower than 4×10^9/L can be called leukopenia. However, the leukocyte level of 3.81×10^9/L is not too much below the normal value, and generally do not need to be treated with medication immediately, but can be observed first.
Clinically, leukopenia can be seen in gram-negative bacillus or viral infections, megaloblastic anemia, aplastic anemia, hypersplenism and other diseases. Generally speaking, if it is too much lower than the normal value, you can carry out some tests under the guidance of the doctor to exclude infections or blood system diseases; if it is not reduced too much, you can pay more attention to observation, if the patient has no comorbidities, and there is no clinical symptom, then there is no need to take medication for the time being.
In summary, white blood cells 3.81 × 10^9 / L, generally do not need to take drugs, but should pay attention to changes in the situation, if there is discomfort, or white blood cells continue to decrease, please consult a doctor in a timely manner.