Is white blood cell low cancer spread?

Leukopenia refers to the total number of white blood cells less than 4×10 to the ninth power per liter. There are many causes of leukopenia. 1, such as viral infection, viral hepatitis, cytomegalovirus infection. 2, bacterial infection, including tuberculosis, etc. can be caused. 3, there are some diseases of the blood system, such as aplastic anemia, leukemia, severe iron deficiency anemia. 4, there are some physical factors, such as chloramphenicol, anti-diabetic drugs, anti-hyperthyroidism drugs can be caused, including some immune system diseases, such as systemic lupus erythematosus. 5, and tumor-related, such as tumor metastasis to bone marrow, some leukemia can cause white blood cell reduction, but only a small proportion of patients. Therefore, low white blood cells are not necessarily caused by cancer, to be specific analysis, if the tumor patient first to check whether the recent use of chemotherapy drugs and other drug factors, and then to improve some related tests, such as bone marrow puncture.