Anti-Parietal Cell Antibody
Autoimmune diseases cause the body to attack itself, which leads to inflammation and results in damage to muscles, tissues, and organs. The body produces antibodies specific to each autoimmune disease; the antibody levels measured in your blood are then used by your doctor to diagnose the disease that is causing your symptoms. APCA is a blood test that is mainly used to diagnose pernicious anemia, a disease process where parietal cells in the stomach are damaged and production of intrinsic factor (which is necessary for the absorption of vitamin B12) is reduced or absent. High blood levels are also seen in people with inflammation of the lining of the stomach, stomach ulcers, and stomach cancer.
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