White blood cells are bigger than red blood cells but fewer in number. If an infection develops, white blood cells attack and destroy the bacteria, virus, or other organism causing it. White blood cells protect the body against infection. A CBC also helps him or her diagnose conditions, such as anemia, infection, and many other disorders.Ī CBC test usually includes: White blood cell (WBC, leukocyte) count. A CBC helps your doctor check any symptoms that you may have, such as weakness, fatigue, or bruising.
A complete blood count (CBC) gives important information about the kinds and numbers of cells in the blood, especially red blood cells, white blood cells, and platelets.
