false FLOAT false false false false false true A white blood cell (WBC) count measures the number of white blood cells in your blood. A WBC differential determines the percentage of each type of white blood cell present in your blood. A differential can also detect immature white blood cells or any abnormalities, both of which are signs of a potential problem. % IMPC_HEM_029_001 false 1.3 false simpleParameter Neutrophil differential count