Gluten IgA Antibody (Anti-Gliadin IgA) - Serum
This test measures the level of antibodies your body produces in response to gluten, a protein found in wheat, barley, and rye. It helps identify potential gluten sensitivity or celiac disease.
["This test may help diagnose gluten-related conditions by detecting gluten-triggered immune responses in your blood."]
Key facts at a glance
- LOINC
- 8070-5
- Short code
- Gliadin IgM Ser-aCnc
- Synonyms
- Gliadin IgM Ser-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like stomach pain, bloating, diarrhea, or unexplained weight loss. It could also be used as part of an evaluation for celiac disease, gluten sensitivity, or other digestive issues linked to gluten exposure.
What to Expect Before the Test
No special preparation is needed for this blood test. You may have fasting instructions depending on your lab, but generally, you can eat and drink normally the day of the test. Bring any medications you’re currently taking to your appointment.
What the Test Involves
A healthcare professional will draw blood from a vein in your arm. The process is quick and typically causes only mild discomfort. You may feel a slight pinch or sting when the needle is inserted.
What the Results Mean
High levels of anti-gliadin IgA antibodies may suggest an immune response to gluten, which could indicate conditions like celiac disease or non-celiac gluten sensitivity. However, results alone cannot diagnose these conditions. Your doctor will consider your symptoms, medical history, and other test results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated anti-gliadin IgA antibodies are often used as a screening test for celiac disease or gluten sensitivity. While not definitive, they can prompt further testing, such as a gluten challenge or additional antibody tests (e.g., anti-tissue transglutaminase or anti-endomysial antibodies), to confirm a diagnosis. This test is not a substitute for a full medical evaluation.
Short name
Anti-Gliadin IgA
Frequently asked questions
How long will it take to get my results?
Can I eat gluten before this test?
Will this test be covered by insurance?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy