Gluten antibody (IgA) serum immunoassay
This test measures the level of immunoglobulin A (IgA) antibodies your body produces in response to gluten, a protein found in wheat, barley, and rye. It helps identify potential celiac disease or gluten sensitivity.
["This test helps diagnose conditions linked to gluten exposure."]
Key facts at a glance
- LOINC
- 53025-3
- Short code
- Gliadin Ab Ser Ql
- Synonyms
- Gliadin Ab Ser Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 doctor may recommend this test if you have symptoms like stomach pain, diarrhea, fatigue, or unexplained weight loss. It may also be used to screen for celiac disease, a condition where gluten triggers an immune response that damages the small intestine. Sometimes, it’s part of a broader evaluation for gluten-related disorders.
What to Expect Before the Test
No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, which usually takes just a few minutes. If you’re on blood thinners or have a history of bleeding issues, let your doctor know beforehand.
What the Test Results Mean
High levels of IgA antibodies to gluten may indicate celiac disease or gluten sensitivity. However, results alone don’t confirm a diagnosis—your doctor will consider symptoms, other test results, and possibly an intestinal biopsy. False positives can occur, so follow-up testing may be needed.
Common Symptoms Linked to High Results
If your test shows elevated gluten antibodies, you might experience digestive issues (like bloating or cramping), long-term nutrient deficiencies (due to poor absorption), or autoimmune symptoms (like joint pain or skin rashes). These symptoms can vary widely, so work with your doctor to address them.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is a key part of diagnosing celiac disease, especially in people with symptoms or a family history of the condition. It helps rule out gluten sensitivity or other autoimmune disorders. If positive, a strict gluten-free diet is the primary treatment to reduce inflammation and restore gut health. Follow-up tests may include endoscopy or genetic screening (e.g., HLA-DQ2/DQ8 testing).
Short name
Gluten antibody (IgA)
Frequently asked questions
What does a positive result mean?
Can I eat gluten before the test?
Will this test show if I have celiac disease?
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