To confirm a diagnosis of celiac disease, a biopsy of the small intestine is examined to detect damage to the intestinal villi. However, given the invasive nature and cost of a biopsy, antibody tests are often used to identify those individuals with high probability of having celiac disease.
Autoimmune hepatitis is a disease in which the body's immune system attacks liver cells. This immune response causes inflammation of the liver, also called hepatitis. Researchers think a genetic factor may make some people more susceptible to autoimmune diseases.
Autoimmune diseases are disorders in which the bodyâs immune system attacks the bodyâs own cells and organs with proteins called autoantibodies; this process is called autoimmunity. Autoimmune hepatitis is a chronic disease of the liver.