Blood Count

Determination of the number of red blood cells (RBC's, or erythrocytes) and white blood cells (WBC's, or leukocytes) in a given volume of blood. The readings vary with sex, age, physiological state, and general health, but a cubic millimetre of blood of a normal individual contains approximately 5,000,000 red cells and 7,000 white cells. A differential blood count is the enumeration of the