96 IgG Gluten-Related Disorders Panel
The 96 IgG Gluten-Related Disorders Panel measures serum IgG antibodies to 96 food antigens, focusing on gluten-containing grains and commonly co-reactive foods. It is used in functional and integrative practice to guide empirical elimination diets in suspected non-coeliac gluten sensitivity and medically unexplained symptoms. IgG positivity is common in healthy individuals;
11
Biomarkers
Blood (serum)
Sample
7–14 business days
Turnaround
No
Fasting
What is the 96 IgG Gluten Panel test?
The 96 IgG Gluten-Related Disorders Panel is a specialty serology assay that measures IgG antibodies to 96 food antigens, with a focus on gluten-containing grains and commonly co-reactive foods. Practitioners in functional, integrative, and naturopathic medicine order this panel to explore immune-mediated food reactions beyond IgE allergy and classical coeliac disease—specifically, to identify candidate foods that may drive symptoms in patients with suspected non-coeliac gluten sensitivity, irritable bowel syndrome, chronic fatigue, or other medically unexplained complaints. The panel is not a diagnostic tool for coeliac disease, IgE-mediated food allergy, or eosinophilic gastrointestinal disorders. It is positioned as a hypothesis-generating test to guide empirical elimination diets, interpreted alongside symptom diaries and, ideally, formal rechallenge. Because the presence of IgG antibodies to food is common in healthy individuals and does not by itself prove causation or intolerance, results must be used cautiously and never in isolation.
What does the 96 IgG Gluten Panel test measure?
Gliadin is a prolamin component of wheat gluten. IgG antibodies to gliadin reflect an adaptive immune response to dietary wheat exposure. Unlike the IgA anti-tissue transglutaminase and endomysial antibodies that define coeliac disease, IgG gliadin antibodies are not specific for coeliac pathology and may be found in individuals with non-coeliac gluten sensitivity or other immune-mediated reactions to wheat proteins.
IgG gliadin is no longer recommended for coeliac disease screening or diagnosis, having been supplanted by IgA tissue transglutaminase and deamidated gliadin peptide antibodies. It may, however, identify patients with immune reactivity to gluten outside the coeliac paradigm, a context sometimes explored in functional and integrative medicine.
IgG antibodies to whole wheat proteins capture reactivity to a broader set of antigens than gliadin alone, including albumins, globulins, and other prolamins. The presence of IgG antibodies indicates prior antigenic exposure and an adaptive response but does not by itself establish clinical disease.
Elevated IgG to wheat is investigated in patients with suspected non-coeliac wheat sensitivity. The clinical significance of isolated IgG elevation remains debated; it is one element of a broader functional assessment rather than a diagnostic criterion.
Rye contains secalin, a prolamin homologous to wheat gliadin. IgG antibodies to rye reflect immune recognition of these proteins following dietary exposure.
Measured to identify cross-reactive or independent immune responses to grains other than wheat in patients who may tolerate wheat but react to rye or barley.
Barley hordein is another gluten-family prolamin. IgG antibodies indicate immune response to barley proteins.
Evaluated alongside wheat and rye to map the spectrum of grain reactivity in patients exploring elimination diets.
Oat avenin shares structural features with wheat, rye, and barley prolamins but is generally better tolerated in coeliac disease. IgG antibodies to oat are less common but may appear in individuals with broad grain sensitivity.
Helps determine whether oats can be safely included in a gluten-restricted diet or whether the patient exhibits independent oat reactivity.
Corn is a common dietary grain and a frequent substitute in gluten-free diets. IgG antibodies to corn proteins can indicate immune reactivity independent of gluten.
Tested to identify whether symptoms attributed to gluten may in fact be due to corn or another grain often used in gluten-free products.
Casein and whey are the major protein fractions in cow's milk. IgG antibodies to these proteins are common and do not by themselves indicate allergy or intolerance but may reflect increased mucosal permeability or immune activation.
Dairy proteins are frequent co-triggers in patients with gluten sensitivity or irritable bowel syndrome. Elevated IgG is explored in functional practice to guide elimination trials, though the correlation with clinical symptoms is variable.
Egg white and yolk proteins are highly immunogenic. IgG antibodies are found in many healthy individuals without clinical symptoms.
Included to identify potential co-reactivity in patients with suspected multiple food sensitivities.
Soy is a legume protein common in processed foods and gluten-free substitutes. IgG antibodies to soy are prevalent.
Tested as part of a broad elimination strategy, particularly in patients who rely on soy-based gluten-free products.
Baker's and brewer's yeast (Saccharomyces cerevisiae) are ubiquitous in the diet and the intestinal microbiota. IgG and IgA antibodies to yeast mannans are elevated in Crohn's disease (ASCA) but are also found in non-inflammatory contexts.
Elevated IgG to yeast may suggest dysbiosis or increased antigenic exposure; interpretation requires correlation with gastrointestinal symptoms and other markers.
A composite or summary metric derived from the number and magnitude of individual IgG elevations across the 96 tested foods. It is intended to represent the overall antigenic load or immune burden.
The composite score is used to prioritise foods for elimination and to track changes over time following dietary intervention. Its clinical validity is debated and it should not be treated as a diagnostic endpoint.
Why is the 96 IgG Gluten Panel test ordered?
- Investigation of suspected non-coeliac gluten sensitivity in patients with negative coeliac serology (IgA tissue transglutaminase, endomysial antibodies) and normal duodenal histology
- Exploration of candidate food triggers in irritable bowel syndrome when empirical low-FODMAP or elimination diets have been inconclusive or incomplete
- Patients with chronic, medically unexplained symptoms—fatigue, brain fog, joint pain, headache—in whom conventional investigation has excluded other causes and who are willing to undertake a structured elimination trial
- Assessment of suspected multiple food sensitivities in the context of suspected increased intestinal permeability or dysbiosis
- Functional or integrative practitioners guiding personalised elimination diets who wish to prioritise which foods to remove and the order of reintroduction
- Monitoring immune reactivity following prolonged dietary elimination or gut-restoration protocols, though serial testing is not universally recommended
Sample collection and turnaround
Sample type
Blood (serum)
Fasting required
No
Collection method
Venipuncture at patient service centre
Turnaround
7–14 business days
Collection notes
Phlebotomy required; serum is sent to Alletess Medical Laboratory for analysis. The patient should be consuming their usual diet at the time of the draw; prolonged elimination of tested foods may reduce antibody levels and yield false-negative results. Minimum serum volume and specific handling requirements are defined by the laboratory.
Specimen requirements
Serum; minimum volume per Alletess protocol (typically 3–5 mL). Separate from cells and freeze if not shipped immediately. Avoid haemolysed specimens.
What can affect 96 IgG Gluten Panel results?
Elimination of a food for weeks to months may reduce circulating IgG antibodies to undetectable levels, potentially yielding false-negative results; the panel is most informative when the patient is consuming their usual diet.
Active mucosal inflammation and increased permeability in untreated coeliac disease can lead to elevated IgG antibodies to multiple foods; the panel may not distinguish primary reactivity from secondary consequences of enteropathy.
Low total IgG or specific subclass deficiency can yield falsely low IgG food antibodies; confirm normal immunoglobulin levels if clinical suspicion is high and results are unexpectedly negative.
IgG food antibody assays are not standardised; each laboratory uses proprietary antigens and thresholds, so results are not interchangeable between platforms and serial monitoring should use the same laboratory.
Healthy individuals eating a varied diet commonly have detectable IgG antibodies to many foods, so a positive result does not by itself establish clinical relevance; correlation with symptoms and response to elimination is essential.
Acute or chronic mucosal inflammation can transiently increase antigenic absorption and polyclonal IgG responses, confounding interpretation; ideally the panel is ordered after resolution of acute illness.
What do 96 IgG Gluten Panel results mean?
Elevated
Elevated IgG antibodies to one or more foods indicate prior antigenic exposure and an adaptive immune response but do not, in isolation, prove clinical intolerance or allergy. In the context of compatible symptoms, elevated IgG results are used to prioritise foods for a time-limited (typically 4–6 weeks) elimination trial. Clinical relevance is established by symptom improvement during elimination and objective recurrence upon rechallenge. The number and pattern of elevations may suggest increased intestinal permeability or dysbiosis, but these inferences remain exploratory.
Normal
A 'normal' panel—few or no elevated IgG antibodies—suggests that immune-mediated food reactions are unlikely to be the primary driver of symptoms, though it does not rule out IgE allergy, coeliac disease, or non-immune mechanisms. Practitioners may proceed with other investigations or a broad empirical elimination diet if clinical suspicion persists.
Reduced
Low or absent IgG reactivity to all tested foods is uncommon and may reflect very recent dietary elimination, immunoglobulin deficiency, or—rarely—a genuinely low antigenic burden. If clinical suspicion for food-related symptoms is high, consider IgE testing, coeliac serology, and other mechanisms (FODMAP intolerance, histamine intolerance, enzymatic deficiencies) that are not captured by IgG.
Note: IgG food antibody testing is controversial. Major allergy and gastroenterology societies (EAACI, AAAAI, American Gastroenterological Association) do not recommend IgG testing for the diagnosis of food allergy or intolerance, and its positive predictive value is low. The panel is best positioned as a tool to inform—not dictate—an elimination diet in motivated patients, interpreted by clinicians familiar with its limitations. Results should never replace formal diagnostic work-up for coeliac disease (IgA tissue transglutaminase, endomysial antibodies, duodenal biopsy) or IgE-mediated allergy (skin prick, specific IgE). Serial retesting is not routinely indicated. Interpretation is laboratory- and method-specific; results from Alletess or other specialty laboratories are not interchangeable with other platforms.
Frequently asked questions
No. Coeliac disease is diagnosed by IgA tissue transglutaminase and endomysial antibodies, confirmed by duodenal biopsy. IgG gliadin is not specific for coeliac disease and is not recommended for screening or diagnosis.
How to access the 96 IgG Gluten Panel test
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Published: October 7, 2026
Last reviewed: October 7, 2026
- Stapel SO, et al. Testing for IgG4 against foods is not recommended as a diagnostic tool: EAACI Task Force Report. Allergy. (2008)
- Biesiekierski JR, et al. No effects of gluten in patients with self-reported non-celiac gluten sensitivity after dietary reduction of fermentable, poorly absorbed, short-chain carbohydrates. Gastroenterology. (2013)
- Catassi C, et al. Diagnosis of non-celiac gluten sensitivity: consensus of the Salerno Experts' Criteria. Nutrients. (2015)
- Caio G, et al. Celiac disease: a comprehensive current review. BMC Medicine. (2019)
- Husby S, et al. European Society Paediatric Gastroenterology, Hepatology and Nutrition guidelines for diagnosing coeliac disease 2020. J Pediatr Gastroenterol Nutr. (2020)
This content is for licensed healthcare practitioners only and does not constitute medical advice. Clinical decisions should be based on the full clinical picture and not on any single test result.