How long will it take for low white blood cell count to come back up?

It's common for white blood cell count to begin to drop a few days after each chemo treatment and to fall to its lowest level during weeks two and three following chemo. Then, as the bone marrow gradually begins to recover and produce new white blood cells, the count will rise. If this doesn't happen, or if you see signs of infection, the doctor may prescribe another CSF to try to boost white blood cell production.