After completion of chemotherapy, you will get GM-CSF and G-CSF or just G-CSF injections (given under the skin) twice a day. These drugs are given to help increase the number of white blood cells and will continue to be given until an adequate number of stem cells have been collected. During this time, you will have blood collected for tests (around 1 tablespoon) at least 3 times a week. If your doctor feels it is necessary, you may have blood collected more often.