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150 Vegan Food Sensitivity Test

About this test

IgG microarray — 150 vegan foods.

What this test can show

Results are reported observationally — describing nutritional status, exposure, and the marker levels and ratios relevant to this panel — to support a practitioner’s clinical interpretation rather than to diagnose any single finding.

Clinical test. Reports include clinical interpretation and reference-range guidance. Ordered by practitioners under their scope of practice.

Sample type

Dried blood spot

Overview

Broad coverage across grains, dairy, proteins, fruits, vegetables, herbs and spices. Results are quantitative — measured in U/mL and classified ELEVATED / BORDERLINE / NORMAL for actionable interpretation — using microarray methodology (food extracts printed on nitrocellulose pads and scanned at high resolution), more precise than traditional ELISA. A complete 5-stage action plan (Remove, Rotate, Replace, Repair, Reintroduce) accompanies the report.

Available panels & tiers

220+ foods

Comprehensive panel

  • 220+ foods across grains, dairy, proteins, fruits, vegetables, herbs and spices
  • Full three-tier quantitative results plus the 5-stage action plan

For broad food-related symptoms — fatigue, headaches, bloating, skin issues, mood. If you have diagnosed IBS, start with inFoods® IBS.

Vegetarian (160)

Plant-based diet focus

  • 160-food vegetarian panel that excludes meat and adjusts for plant-based diets

Patients following a vegetarian diet.

Vegan (150)

Fully plant-based

  • 150-food vegan panel tuned for a fully plant-based diet

Patients following a vegan diet.

Three-tier quantitative results

Each food is measured in U/mL and placed into one of three categories — far more useful than positive/negative — and each category maps to a clear dietary action.

  • Elevated (high antibody reaction): a high IgG response — the primary trigger candidates. Action: eliminate for at least 3 months, substituting foods from the NORMAL list in the same food group.
  • Borderline (moderate reaction): may contribute to symptoms but less likely to be primary triggers. Action: reduce and rotate — limit to twice per week with 3–4 days between, for 3 months.
  • Normal (no significant reaction): unlikely to be triggering symptoms. Action: eat without restriction (unless a prior adverse reaction or a known IgE allergy).

Organized two ways

The full report shows every tested food with its U/mL value and colour-coded tier, organized by Order of Reactivity (strongest reactions at the top, to see priorities) and by Food Groups (alphabetical within categories, to find replacements).

A structured 5-stage program

The accompanying guidebook walks through exactly what to do with the results — most IgG tests stop at the report; this one ships with a complete dietary protocol.

Stage 4 (Repair) matters as much as elimination: testing positive to a high number of foods may indicate increased intestinal permeability, and repairing gut health addresses the cause rather than only the symptoms.

  • 1. Remove — eliminate ELEVATED foods entirely (3 months).
  • 2. Rotate — limit BORDERLINE foods to twice/week (3 months).
  • 3. Replace — substitute NORMAL alternatives from the same food groups (ongoing).
  • 4. Repair — gut-healing foods, supplements and lifestyle (throughout).
  • 5. Reintroduce — one food every 5 days, monitoring symptoms (after 3 months).

Where the evidence is strongest

Research has linked IgG-guided dietary intervention to symptom improvements particularly in irritable bowel syndrome and migraine. Clinicians report improvements across a wider symptom range, but the strongest evidence is concentrated in these two areas — IBS (bloating, constipation, diarrhoea, flatulence, fatigue, nausea, cramps and abdominal pain) and migraine (headache frequency and severity, associated nausea, vomiting, post-migraine fatigue).

Important considerations

  • Not recommended during pregnancy or breastfeeding (immune suppression can affect results) — wait until 4–6 weeks after birth or until breastfeeding ends.
  • Not recommended for children under 2 (the infant gut is more permeable and the immune system still developing).
  • Not suitable during chemotherapy, radiotherapy, antibody/biologic therapy or other immunosuppression — these suppress antibody production.
  • Foods completely avoided for >3 months may drop below detection — reintroduce daily portions for one week before sampling (unless a known allergy).
  • This is not an IgE allergy test — continue avoiding any known IgE-allergen foods regardless of results.
  • It does not diagnose celiac disease (requires anti-tTG / anti-Gliadin) or lactose intolerance (an enzyme deficiency, not an immune response).

Technology & what it measures

The test measures IgG-mediated immune reactions (Type III hypersensitivity) to food proteins using FoodPrint® microarray methodology — food extracts printed onto nitrocellulose pads, measured by high-resolution scanner and calibrated against standards. It does not identify IgE-mediated food allergies, celiac disease, lactose intolerance, histamine or other chemical sensitivities. Professional guidance is advised when interpreting results and planning dietary changes — particularly for a child.

What’s measured
IgG antibody reactivity across 220+ individual foods (Type III hypersensitivity), reported in U/mLThree-tier classification: ELEVATED / BORDERLINE / NORMAL
Who it’s for
  • Patients with broad food-related symptoms — fatigue, headaches, bloating, skin issues, mood — who want a wider picture than an IBS-specific test.
  • For diagnosed IBS, inFoods® IBS is the more targeted, clinically-validated option.
Frequently asked
How is this different from inFoods® IBS?

They’re built for different goals. inFoods® IBS is clinically validated specifically for IBS — 18 foods with IBS-specific cut-offs, published in Gastroenterology, with documented responder rates. The 220+ IgG test is broader — 220+ foods for general food-sensitivity assessment with a complete dietary action plan, suited to a wider range of symptoms (migraine, fatigue, skin, joints, plus IBS).

Why test for IgG and not IgE?

IgG and IgE are two different antibody types. IgE-mediated allergy is immediate (minutes), often severe and can be life-threatening. IgG-mediated sensitivity is delayed (24–72 hours), produces inflammation and chronic symptoms, and is harder to identify without testing. If a true IgE allergy is suspected, see an allergist — this test is for the delayed, harder-to-pin-down IgG reactions.

Why do food sensitivities take 24–72 hours to show symptoms?

When food proteins enter the bloodstream and IgG antibodies form, they create antigen-antibody complexes usually cleared by immune cells. If the system is overloaded, complexes can deposit in tissues and cause chronic inflammation — and that inflammation produces symptoms. The delay is why it’s so hard to connect a Monday meal to Wednesday symptoms.

Can a patient have high IgG and no symptoms?

Yes — some people have elevated IgG to certain foods without symptoms, usually because their immune system efficiently clears the complexes before they deposit in tissue. Frequently-eaten foods like wheat, dairy and soy are commonly elevated. Match results against actual symptoms when planning dietary changes.

What if a food never eaten comes back positive?

Two likely explanations: hidden ingredients in processed foods (dairy proteins, agar, etc.), or cross-reactivity — some food proteins are structurally similar to other foods or non-food items (pollens, dust mites, latex, dander). A cross-reactive result on an uneaten food may reflect sensitivity to a related substance.

Will an elevated wheat result mean celiac disease?

No. Celiac is diagnosed via anti-tTG and anti-Gliadin antibodies and confirmed with biopsy. The 220+ test removes gluten from the wheat extract and tests gliadin separately; an elevated wheat result indicates IgG sensitivity to non-gluten wheat proteins. Neither result confirms or rules out celiac on its own.

How long until retest?

We don’t recommend retesting before 9–12 months. It’s the embedding of immune complexes in tissue that drives symptoms, not just antibody levels. Watch symptoms after dietary changes — if reintroducing a food doesn’t trigger symptoms, tolerance has likely developed. Most people don’t need to retest if symptoms have resolved.

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