Cytopenias or Low Blood Cell Counts Make an Appointment Patient Education Find a Doctor Download Patient Education Low blood cell counts (cytopenias) can be caused by chemotherapy and radiation therapy. These cancer treatments target rapidly dividing cancer cells. The treatments can also affect other rapidly dividing cells, such as those in your bone marrow. You may experience low white blood cell count (neutropenia), low red blood cell count (anemia) or low platelet count (thrombocytopenia). A blood test called a Complete Blood Count (CBC) checks your levels of each blood cell type. Download PDF: Cytopenias or Low Blood Cell Counts Download PDF: Cytopenias or Low Blood Cell Counts National Jewish Health authors free downloadable patient education materials to provide you and your family the information and tools to help manage your disease. They include Understanding Booklets, Med Facts, Test Facts, Medication handouts and more. Search Free Education Materials