Absolutely, it's always worth it to get tested for Celiac when you have gluten sensitivity (especially if you have intestinal issues or a moderate to high gluten reactivity on your tests) just to rule it out. Persistent brain fog and memory loss (outside of digestive issues) are two main symptoms of Celiac due to less blood flow to the brain. Make sure to test transglutaminase and endomysial antibodies when testing for Celiac Disease.