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These drugs lower the white blood cell count to a greater degree than the counts of other blood cells â red blood cells and platelets â although these are commonly affected, too. Fortunately, the effect of these drugs on the white blood cell count is usually both predictable and short-lived. The white cell count generally falls below the normal range about seven to ten days after a chemotherapy treatment and recovers within about a week after that.
3. Leukemia. A bone marrow disorder like leukemia can be a cause of elevated white blood cell count. Leukemia is essentially a type of cancer where your bone marrow starts producing too many abnormal white blood cells. These white blood cells are usually non-functional and increase the risk of infections.hite blood cell count or simply WBC count measures the number of white blood cells in the blood. White blood cells or leukocytes help fight infections. These cells attack and destroy the virus, bacteria or other organisms causing an infection.