This is the gold-star screening test for Celiac Disease. If you're experiencing digestive issues, fatigue, or other symptoms related to eating gluten, this test is the definitive first step. It detects IgA antibodies that your body produces against its own tissues (specifically, the enzyme TTG) when you consume gluten. It is a highly sensitive and specific blood test. This test provides the clear, reliable answer you need to finally get to the bottom of your symptoms and start your path to feeling better.