Everything You Need to Know About the Gliadin Antibodies Panel Test
About Everything You Need to Know About the Gliadin Antibodies Panel Test
| Field | Value |
|---|---|
| Also Known As | Anti-Gliadin Antibody Test, AGA Test, Deamidated Gliadin Peptide (DGP) Antibodies Test, Gliadin IgA, Gliadin IgG |
| Sample Type | Venous blood (serum) |
| Fasting Required | No |
| Report Time | within 3 to 5 days |
| Recommended For | All ages; males and females |
| Price | Starting at ₹3,000 |
What is a Gliadin Antibodies Panel?
The gliadin antibodies panel is a blood test that measures the immune system's response to gliadin, a protein found in gluten. When the body reacts abnormally to gliadin, it produces specific antibodies that this test can detect.
Doctors commonly order this test to evaluate patients with symptoms that suggest celiac disease or other gluten-related conditions. It is also referred to as the anti-gliadin antibody test or AGA test.
What Does a Gliadin Antibodies Panel Measure?
The gliadin panel detects two main types of antibodies in the blood. Here is what each component measures:
| Parameter | What It Measures |
|---|---|
| Anti-Gliadin IgA Antibodies | Immunoglobulin A antibodies directed against gliadin; produced in the small intestine and closely linked to gluten-related inflammation |
| Anti-Gliadin IgG Antibodies | Immunoglobulin G antibodies against gliadin; particularly useful when a patient has low IgA levels, a condition more common in celiac disease |
| Deamidated Gliadin Peptide (DGP) Antibodies | Antibodies against a modified form of gliadin; these offer greater diagnostic accuracy than older AGA tests and are now preferred in clinical practice |
Why is a Gliadin Antibodies Panel Done?
There are several reasons a doctor may request this test.
Common Symptoms That May Require This Test
The following symptoms are among the most common reasons a doctor may recommend a gliadin antibody test:
- Persistent bloating, gas, and abdominal pain
- Chronic diarrhoea or constipation
- Stools that are pale, fatty, or float in the water
- Nausea and vomiting
- Unexplained weight loss
- Extreme fatigue, which may point to iron deficiency anaemia
- Skin rashes that are itchy and recurring
Conditions This Test Can Help Detect
The gliadin panel can help identify the following conditions:
- Celiac disease, an autoimmune condition where gluten damages the lining of the small intestine
- Dermatitis herpetiformis, an itchy skin rash linked to gluten sensitivity
- Non-celiac gluten sensitivity, where symptoms arise from gluten without a celiac diagnosis
Gliadin Antibodies Panel for Chronic Disease Monitoring
For patients already diagnosed with celiac disease, this test plays an important ongoing role. Gliadin antibody levels tend to fall quickly once a person follows a strict gluten-free diet, making the test a useful indicator of dietary compliance.
Doctors typically repeat the anti-gliadin antibody test every 6 to 12 months to track how well treatment is working.
How to Prepare and What to Expect
Preparation for this test is straightforward, but a few steps will help ensure accurate results.
Do You Need to Fast?
No, fasting is not required before the gliadin antibodies panel. You can eat and drink normally on the day of the test.
Practical Tips Before Your Test
Keep the following points in mind before your appointment:
- Continue eating foods that contain gluten for several weeks before the test; the body only produces antibodies when exposed to gliadin
- Do not start a gluten-free diet before testing unless your doctor specifically advises it
- Inform your doctor about all medications and supplements you are currently taking
- Wear a short-sleeved top on the day of your test for easy access to your arm
Step-by-Step Procedure
The sample collection process is quick and straightforward. Here is what to expect:
- A trained phlebotomist will clean the skin over a vein in your arm with an antiseptic solution.
- A tourniquet is tied around your upper arm to make the vein easier to locate.
- A small amount of blood is drawn from the vein using a fine needle.
- The needle is removed, and a small bandage is applied to the site.
- Your blood sample is labelled and sent to the laboratory.
- In the lab, the sample is analysed using an ELISA (enzyme-linked immunosorbent assay), a method that detects antibodies through a controlled colour-change reaction.
Factors That Can Affect Accuracy
Certain factors may influence the reliability of your results:
- Following a gluten-free or low-gluten diet before testing; antibody levels can drop to undetectable levels within weeks
- IgA deficiency, which can produce a false-negative result for IgA-based tests
- Current medications and supplements
- Other gastrointestinal conditions that may also raise antibody levels
Understanding Your Gliadin Antibodies Panel Results
Your results should always be reviewed alongside your medical history and symptoms. The table below shows standard reference ranges for the deamidated gliadin antibody parameters.
| Parameter | Result | Unit |
|---|---|---|
| Gliadin (Deamidated) IgA | Less than 15: Negative; 15 or above: Positive | U/mL |
| Gliadin (Deamidated) IgG | Less than 15: Negative; 15 or above: Positive | U/mL |
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
A negative result suggests a lower likelihood of celiac disease. A positive result is consistent with celiac disease but may also occur in other conditions, including wheat allergy, Crohn's disease, colitis, or lactose intolerance. Further tests, such as a small intestine biopsy, are usually needed to confirm any diagnosis.
Results During Special Conditions
Two specific situations can affect how results are interpreted.
If a patient has selective IgA deficiency (a condition that affects an estimated 2 to 3% of people with celiac disease), IgA-based tests may produce a false-negative result. In such cases, IgG-based deamidated gliadin or tTG testing is recommended.
Starting a gluten-free diet before testing can also cause results to appear normal even when celiac disease is present, because antibody levels fall rapidly once gluten is removed from the diet.
How to Maintain Healthy Levels
The following general tips support gut health and overall wellbeing:
- If diagnosed with celiac disease, follow a strict gluten-free diet as guided by your doctor
- Consider consulting a registered dietitian for help planning a balanced, gluten-free eating routine
- Ensure adequate intake of nutrients commonly affected by malabsorption, such as iron, folate, vitamin B12, vitamin D, and calcium
Lupin Diagnostics Gliadin Antibodies Panel Price and Home Collection
The gliadin antibodies panel is available at Lupin Diagnostics with home sample collection across major cities. Indicative prices across India are listed below.
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹3,000 |
| Indore | ₹3,000 |
| Hyderabad | ₹3,000 |
| Bangalore | ₹3,000 |
| Chennai | ₹3,000 |
| Kolkata | ₹3,800 |
| Pune | ₹3,000 |
| Bhopal | ₹3,000 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the test on the Lupin Diagnostics website
- Choose your city and preferred time slot
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre
- Receive your report via email or WhatsApp within the stipulated turnaround time
Home Collection
Lupin Diagnostics offers home sample collection for the gliadin antibodies panel across cities in India. All samples are processed in NABL-accredited laboratories by experienced technologists. Digital reports are delivered via email or WhatsApp, so you can share them with your doctor easily.
Frequently Asked Questions
IgA antibodies are produced in the small intestine and are more directly linked to the gut inflammation seen in celiac disease, making them a more specific marker. IgG antibodies are less specific to celiac disease on their own but are particularly useful in patients who have low IgA levels, as these individuals may return a false-negative on IgA-based tests alone.
The body only produces anti-gliadin antibodies when it is actively exposed to gliadin. If you remove gluten from your diet before testing, antibody levels can drop within weeks, leading to a false-negative result that may delay an accurate diagnosis.
The tissue transglutaminase (tTG) test is another commonly used marker for celiac disease. Deamidated gliadin panel antibodies carry higher diagnostic accuracy than older AGA tests and can be used alongside or instead of tTG testing, especially in patients with IgA deficiency. Both tests are often ordered together for a more complete picture.
Yes, the test is suitable for all ages. In children under 2 years of age, the DGP IgG component of the gliadin panel is particularly valuable, as it can improve diagnostic sensitivity in early celiac disease where other markers may miss the condition.
A positive anti-gliadin antibody test result does not confirm celiac disease on its own. Your doctor will likely order further tests, which may include a biopsy of the small intestine, to look for characteristic damage caused by gluten before making a diagnosis.
Yes. In patients who have been diagnosed with celiac disease, the AGA test is a useful monitoring tool. When a gluten-free diet is followed correctly, gliadin antibody levels fall and may become undetectable over time, indicating a good response to dietary treatment.
IgA deficiency can cause IgA-based tests to show a false-negative result. If your doctor suspects this, they may check your total IgA levels alongside the panel. If deficiency is confirmed, testing with IgG-based deamidated gliadin or tTG antibodies will be recommended to get a reliable result.
Everything You Need to Know About the Gliadin Antibodies Panel Test
