The Coeliac Disease HLA Panel is a genetic test used to identify the presence of specific human leukocyte antigens (HLAs) that are associated with an increased risk of developing coeliac disease. The test typically looks for the HLA-DQ2 and HLA-DQ8 gene markers, which are found in most individuals with coeliac disease. While the presence of these markers alone does not confirm the disease, their absence makes the diagnosis unlikely. This test is useful in helping diagnose coeliac disease, particularly in patients with ambiguous symptoms or when other tests, like blood tests for specific antibodies, are inconclusive.