. The direct Coombs test detects autoimmune antibodies that stick to the surface of red blood cells. These antibodies sometimes destroy red blood cells and cause anemia.
. It is commonly used in the diagnosis of conditions such as autoimmune hemolytic anemia, hemolytic disease of the newborn, drug-induced hemolysis, and transfusion reactions.
. Doctors will order these tests if you have signs or symptoms of anemia or jaundice (yellowing of the skin or eyes).