Complete blood count is an examination of blood cells to determine the patient's overall health condition. A decrease or increase in the number of blood cells that crosses the normal limit can provide clues to health problems that need to be followed up, such as infections, anemia, to leukemia. Complete blood count includes various components that make up blood cells. Some components included in the complete blood count include the number of red blood cells, white blood cells, and the number of blood platelets (platelets). In addition, the protein in red blood cells (hemoglobin), and the portion (percent) of red blood cells in one blood volume (hematocrit). A complete blood count can also contain information about the white blood cell count, the average size of red blood cells (MCV), the amount of hemoglobin in each red blood cell (MCH), as well as the concentration of hemoglobin or the relative amount of hemoglobin to each size of red blood cells ( MCHC). The white blood cell t