Celiac Disease Screening Test
A celiac disease screening is a blood test that looks for signs of celiac disease, an autoimmune disorder that causes a serious allergic reaction to gluten.
What this test measures
This test measures antibodies to gluten in your blood. If you have celiac disease, your immune system makes these antibodies when you eat or drink gluten, which can attack the lining of your small intestine.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Higher-than-normal results
A positive result means you probably have celiac disease.
Lower-than-normal results
A negative result means you probably don't have celiac disease.
Frequently asked questions
What is celiac disease?
Celiac disease is an autoimmune disorder that causes a serious allergic reaction to gluten, a protein found in wheat, barley, rye, and other grains.
What does the screening test look for?
The test looks for antibodies to gluten in your blood. If you have celiac disease, your immune system makes these antibodies when you eat or drink gluten.
What are the common types of celiac disease tests?
Common tests include tissue transglutaminase antibody (tTG) IgA test, immunoglobulin A (IgA) test, immunoglobulin G (IgG) test, and deamidated gliadin peptide (DGP) antibodies test.
What does a positive result mean?
A positive result means you probably have celiac disease. Your provider may order other tests to confirm.
What happens if my result is uncertain?
If your result is uncertain, your provider may order other tests such as a biopsy, capsule endoscopy, genetic testing, or tests for related health problems.
Related lab tests
Sources
- MedlinePlus: Celiac Disease Screening — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.