Would gluten intolerance or celiac disease show up on a fasting lab?

Answer 1

all tests must be done while the person is on a gluten containing diet. Antibodies are reduced and intestinal damage begins to heal immediately upon removing all gluten from the diet, so the risk of misdiagnosis is increased if the person is not eating gluten. For those who have already commenced themselves on a gluten-free diet, professional guidelines recommend a re-challenge of 2-6 weeks with 10 g of gluten (four slices of bread) before repeating the investigations. Those who experience severe symptoms earlier can be regarded as sufficiently challenged and can be tested earlier.[

Answer 2

i don't think so for celiac disease because the bodies inability to absorb nutrients would show up more so on a test that actually involves a patient eating the night before as opposed to not having a meal for 10 hours. i work for a gastrenterologist and they encourage a big meal before a celiac test. Gluten intolerence is just a test to show if you are allergic to wheat products......so yes they would show up but fasting really is pointless......cause the results would show up regardless..