Serum IgA Anti-Gliadin Antibodies (Peptide-Specific)
This test measures antibodies in your blood that react to gliadin, a protein found in gluten. It helps evaluate potential gluten sensitivity or celiac disease.
This test checks for gluten-related immune responses that may indicate digestive or health concerns.
Key facts at a glance
- LOINC
- 63453-5
- Short code
- Gliadin peptide IgA Ser IA-aCnc
- Synonyms
- Gliadin peptide IgA Ser IA-aCnc
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0.8
- Ref high
- 1.2
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- CPT
- 85610
- SNOMED
- 396252006
- 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 Is Done
Your healthcare provider may recommend this test if you have symptoms like persistent diarrhea, stomach pain, weight loss, or fatigue. It’s also used in the evaluation of celiac disease, gluten sensitivity, or unexplained gastrointestinal issues.
What to Expect During the Test
A blood sample is taken from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause pain. The test itself is quick and done in a lab.
What the Results Mean
Positive results suggest an immune response to gluten, which can help guide dietary or medical decisions. However, results alone don’t diagnose celiac disease—additional testing may be needed.
Common Symptoms Linked to Positive Results
Symptoms like bloating, nausea, or digestive discomfort may appear if gluten triggers an immune reaction. Some people experience no symptoms but still have elevated antibody levels.
Reference range
INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test plays a role in diagnosing gluten-related disorders by identifying antibodies that attack gluten proteins. While not definitive for celiac disease, it supports further evaluation with other tests (like endoscopy or genetic screening).
Short name
IgA Anti-Gliadin Antibody Test
Frequently asked questions
What triggers this test?
How long does it take to get results?
Can I eat gluten before the test?
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