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Gluten Immunoglobulin G (IgG) Antibody, Serum

Published: August 9, 2026Updated: August 16, 2026

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 celiac disease or gluten sensitivity.

Quick summary

["This test helps determine if gluten may be triggering an immune reaction in your digestive system."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
109933-2
Short code
Gliadin IgG Msmt Ser
Synonyms
Gliadin IgG Msmt Ser
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 persistent stomach pain, bloating, diarrhea, or unexplained weight loss. It’s also used when screening for celiac disease, especially if you have a family history of the condition or symptoms that don’t improve with a gluten-free diet.

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 a blood sample. The process is quick and usually painless. If you’re on blood thinners, let your provider know before the test.

What the Test Results Mean

High levels of gluten antibodies may indicate an immune response to gluten, which could be linked to celiac disease or gluten sensitivity. However, results alone don’t diagnose the condition—they’re often used alongside other tests or a gluten-free diet trial.

Common Symptoms Linked to High Antibody Levels

If your test shows elevated gluten antibodies, you might experience digestive issues like chronic diarrhea, abdominal discomfort, or nutrient deficiencies. Some people also report fatigue, skin rashes, or unexplained weight changes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgG Anti-Gluten Antibody

Frequently asked questions

What does a positive test result mean?
A positive result suggests your body is producing antibodies against gluten, which may indicate an immune response. This doesn’t confirm celiac disease alone but could prompt further testing, such as an endoscopy or gluten challenge.
Can I eat gluten before the test?
No dietary restrictions are needed for this test, but if you suspect celiac disease, your provider may recommend a gluten-free trial before or after testing for more accurate results.
How long does it take to get results?
Test results are typically available within 1–3 business days, depending on your lab’s processing time. Follow up with your healthcare provider to discuss the meaning of your results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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