You’ll get a simple blood draw to check for specific antibodies: tTG-IgA is the main one. It’s not a home kit from Amazon—this is serious lab work. If the result is high, it screams “possible celiac.” But here’s the ironic part: about 10% of people with celiac have a negative blood test, especially if they have IgA deficiency. So a negative test doesn’t always mean you’re safe.
Your doctor might also check your total IgA levels—because nothing says “fun” like learning you lack a key immune component. If the blood test is positive, they’ll move to the next step. If it’s negative but your symptoms scream celiac, don’t give up—push for more.
