Genetic testing for human leukocyte antigens HLA-DQ2 and HLA-DQ8 can be used to rule out celiac disease. Coeliac disease is an autoimmune disorder. This means your body attacks itself. This test is also used to see how well people with the condition are doing. It is one of several blood tests that may be used to help diagnose coeliac disease.
It’s important to be tested for celiac disease before trying a gluten-free diet. Eliminating gluten from your diet might make the results of blood tests appear normal.