ANTI GLIADIN IGG ANTIBODIES

The Anti-Gliadin IgG Antibodies Test is a specialized blood test that detects Immunoglobulin G (IgG) antibodies directed against gliadin, a protein component of gluten found in wheat, barley, and rye. This test helps evaluate the body's immune response to gluten and is used as part of the diagnostic assessment for celiac disease, gluten-related disorders, and certain cases of gluten sensitivity.

Gliadin is one of the primary proteins in gluten that may trigger an abnormal immune response in susceptible individuals. In people with celiac disease, ingestion of gluten causes the immune system to attack the lining of the small intestine, leading to inflammation, villous atrophy, and poor nutrient absorption. The Anti-Gliadin IgG test can be particularly useful in individuals with IgA deficiency, where IgA-based celiac tests may produce false-negative results.

Although modern serological tests such as Anti-Tissue Transglutaminase (tTG) IgA and Anti-Deamidated Gliadin Peptide (DGP) antibodies are generally preferred for diagnosing celiac disease, the Anti-Gliadin IgG test remains valuable in selected clinical situations and when interpreted alongside other laboratory findings.

Benefits of the Test

• Detects IgG antibodies against gliadin
• Supports evaluation of celiac disease
• Helps assess gluten-related immune responses
• Useful in patients with selective IgA deficiency
• Assists in diagnosing malabsorption disorders
• Requires only a blood sample
• Supports early diagnosis and dietary management

Why Doctors Recommend This Test

Doctors may recommend this test for individuals with:

• Chronic diarrhea
• Persistent abdominal pain or bloating
• Unexplained weight loss
• Iron deficiency anemia
• Chronic fatigue
• Nutritional deficiencies
• Suspected celiac disease
• Selective IgA deficiency
• Family history of celiac disease
• Gluten-related digestive symptoms

Preparation Before Test

Sample Required

• Peripheral venous blood sample (Serum)

Preparation Guidelines

• No fasting is required.
• Continue consuming gluten-containing foods before testing unless instructed otherwise by your physician, as eliminating gluten may reduce antibody levels.
• Inform your healthcare provider about any autoimmune disorders or medications.
• Follow laboratory instructions before sample collection.

Reporting Time

Results are generally available within 3–7 working days, depending on laboratory processing.

Who Should Take This Test?

This test is recommended for:

• Individuals with symptoms suggestive of celiac disease
• Patients with gluten-related digestive complaints
• Individuals with selective IgA deficiency
• Children and adults undergoing evaluation for celiac disease
• Patients with unexplained nutritional deficiencies
• Individuals with autoimmune disorders associated with celiac disease
• People with a family history of celiac disease

Clinical Significance

Elevated Anti-Gliadin IgG antibodies may be associated with:

• Celiac Disease
• Gluten-Sensitive Enteropathy
• Gluten Sensitivity
• Malabsorption Syndrome
• Gluten-Related Autoimmune Disorders

Common symptoms that may prompt testing include:

• Chronic diarrhea
• Abdominal bloating
• Abdominal pain
• Weight loss
• Fatigue
• Iron deficiency anemia
• Poor growth in children
• Nutritional deficiencies
• Recurrent mouth ulcers

Test results should always be interpreted together with clinical findings, total IgA levels, Anti-tTG antibodies, Anti-Deamidated Gliadin Peptide (DGP) antibodies, endomysial antibodies (EMA), and, when indicated, an intestinal biopsy.