Food Sensitivity &

Food Allergies Tests     

Understand your body’s immune response to the foods you eat.

Food reactions are common, but not all are true allergies. Some are delayed immune responses that can quietly drive inflammation, digestive discomfort, skin issues, fatigue, and more. Essencia Wellbeing’s Food Sensitivity & Food Allergy testing panels help identify both immediate (IgE-mediated) and delayed (IgG- or complement-mediated) immune reactions to foods and key gut barrier markers.

These tests offer a clearer picture of how your body interacts with food — helping to guide a more targeted, anti-inflammatory nutrition plan, support digestive repair, and reduce immune burden. By uncovering individual sensitivities and intolerances, we can move beyond guesswork toward a more personalised and sustainable way of eating for your wellbeing.

Food sensitivities are often a symptom, not the root cause, especially when the intestinal barrier is compromised.

A “leaky” gut allows food antigens to cross into circulation, triggering immune responses that can cause fatigue, digestive distress, skin issues, and inflammation.

At Essencia Wellbeing, we often recommend running gut-focused panels first. Once the gut environment is stabilised, food testing reveals a clearer and more accurate picture of which foods genuinely drive inflammation.

Not sure which test is right for you?

Book a free 10-minute discovery call to ask questionss, or book an Initial consultation to fully assess your health situation and start your supported health journey today.

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Standout Food Sensitivity & Food Allergy Tests

Precision Allergy 88

For immune pathway and allergy mapping

A comprehensive panel assessing both immediate allergies and delayed sensitivities. It provides insight into complex, multi-system inflammatory responses. It is particularly useful for individuals with suspected combined food allergy and sensitivity reactions, unexplained inflammation, or resistant gut or skin symptoms.

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FIT 132 or FIT 176 – Food Inflammation Test & Gut Barrier

For food-triggered inflammation and gut barrier health assessment

The FIT 132 or FIT 176 Food Inflammation Tests (FIT) with Gut Barrier Panel are comprehansive panels measuring delayed food reactions and gut wall integrity, offering insights into both dietary triggers and intestinal health.

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Precision Allergy 88

Food Sensitivity and Allergy Test

food sensitivity and allergy testing naturopathic consults in Glebe Sydney

The Precision Allergy 88 (P88) test provides a thorough assessment of food-related immune activation, measuring four key immune pathways across 88 common foods — including both immediate and delayed responses, plus inflammation. This broad immune mapping helps distinguish between a classic allergy, a delayed sensitivity, and an inflammatory response, all of which can drive different symptoms.

What it Measures:

The Precision Allergy 88 looks at four key immune markers to understand how your body reacts to different foods

  • IgE: Immediate allergies (hives, congestion, swelling)

  • IgG & IgG4: Delayed sensitivities (symptoms hours to days later)

  • Complement (C3d): Inflammatory activation, clarifying which foods cause true systemic inflammation

  • Candida antibodies: Immune response to fungal overgrowth

Who Benefits:

This test may be useful if you experience:

  • Allergic or systemic symptoms: swelling, hives, sinus or respiratory irritation

  • Inflammatory or immune-driven conditions: eczema, psoriasis, chronic fatigue

  • Autoimmune activation: thyroid autoimmunity, joint inflammation, recurrent flares

  • Neuroimmune patterns: brain fog, ADHD-like symptoms, migraines after eating.

  • Symptoms that suggest both allergy and delayed food sensitivity.

Why it’s Useful:

  • Measures all four immune mechanisms, not just delayed reactivity

  • Distinguishes between allergy, sensitivity, and immune-driven inflammation

  • Useful for people with autoimmune or systemic immune dysregulation.

Sample: Blood test via Laverty Labs (NSW) or blood spot at home collection

Turnaround: 4-5 weeks.

Supplier: Precision Point Diagnostics (USA), via RN Labs, Australia.

Discover which foods may be quietly triggering inflammation in your body. Book a health consultation →

FIT 132 & FIT 176

Food Inflammation Test & Gut Barrier

Food Inflammation test and gut barrier test in sydney with Naturopath Catrina Bleicher

The Food Inflammation Test (FIT) uses a dual-pathway approach of food based reactions using all four IgG1–4 antibodies and C3d, combined with gut barrier assessment markers to measure the inflammatory potential of 132 or 176 foods and additives.

Unlike antibody-only tests, FIT reveals whether immune reactivity is rooted in intestinal permeability or other gut-origin inflammation, guiding targeted, layered treatment instead of blanket elimination.

What it Measures:

Immune response to 132 or 176 foods, colourings, and additives via:

  • IgG1–4 antibodies + Complement (C3d): Reveal delayed-onset food reactions and inflammation

  • Gut barrier markers:

    • Zonulin & Occludin: Show intestinal “leakiness” or tight junction stress

    • Lipopolysaccharide (LPS): Indicates bacterial migration from the gut

    • Candida antibodies: Reflect yeast overgrowth contributing to immune activation

  • IgA (optional): Mucosal immune defense activity, reflecting local gut immune balance

Who Benefits:

This test may be useful if you experience:

  • Digestive concerns: bloating, IBS, reflux, constipation, or post-meal discomfort

  • Inflammatory symptoms: joint pain, fatigue, migraines, body inflammation

  • Skin issues: acne, eczema, rashes, or reactive skin flares

  • Mood and energy changes: fatigue, brain fog, or irritability linked to food intake

  • Autoimmune or immune reactivity: where “leaky gut” may be a contributing factor.

The FIT test is ideal for identifying foods that promote inflammation or worsen gut dysfunction rather than classic allergy symptoms.

Why it’s Useful

  • Measures more foods than other panels, including additives, colourings, and cultural diet variations.

  • Helps to identify hidden or delayed food sensitivities linked to a variety of non-specific symptoms

  • Uniquely adds gut barrier assessment for a more holistic functional GI evaluation, informing wider intervention (diet and gut healing)

  • Provides personalised meal plan, colour-coded report, and mobile app to support elimination and reintroduction.

Sample: Blood test via Laverty Labs (NSW), or blood spot at home collection

Turnaround: 3-4 weeks.

Supplier: KBMO Diagnostics (USA) via RN Labs, Australia.

Discover what may be quietly triggering inflammation in your body. Book a health consultation →

Food Sensitivity and Food Allergy Testing – FAQs

  • A food allergy usually involves an immediate immune reaction (IgE-mediated) like hives, swelling, or breathing issues. Food sensitivity refers to delayed or less obvious symptoms (digestive discomfort, fatigue, headaches) that may appear hours or days later, often linked to IgG or inflammation rather than true allergy.

  • If you have ongoing digestive symptoms, a history of “leaky gut,” recent antibiotic use, or autoimmune issues, gut testing (such as GI360, MetaXplore, or a Gut Barrier Panel), is usually the best place to start.

    Improving your gut health can reduce unnecessary food reactions and make FIT results more accurate. Once your gut is supported, the FIT test can then help pinpoint which foods may still be driving inflammation, so your nutrition plan is targeted and effective. If you’re unsure, your practitioner can help tailor the best order for your health goals.

  • If your main symptoms are digestive or gut-related, the FIT Test is often the best starting point. If you have skin, respiratory, or systemic immune symptoms, Precision Allergy 88 is more suitable. For chronic or complex cases, your practitioner may recommend starting with gut health testing first to ensure your food reactivity results are as accurate as possible.

  • Not always. Both tests show which foods trigger an immune response; however, most sensitivities can often be managed with a short-term elimination diet followed by gradual reintroduction. Only true allergies (IgE-mediated) generally require lifelong avoidance.

  • Any food test can show false positives or false negatives, especially if you haven't eaten a food recently or your gut is inflamed ("leaky gut"). Results should be interpreted with your symptoms and clinical history—and not used to restrict your diet unnecessarily

  • No. These tests reveal possible triggers but do not predict reaction severity. For allergies, the safest method is a supervised challenge. For sensitivities, symptom tracking and cautious reintroduction are recommended.

  • Most insurance plans do not cover food sensitivity tests, but some may cover allergy testing, especially when ordered by a doctor. Check with your provider for details.

  • You’ll receive a clear report and a consultation. Together, we’ll build a personalised action plan: removing specific foods short-term, healing the gut, and then carefully reintroducing foods—minimising unnecessary restriction while maximising symptom relief.

Take the guesswork out of food reactions

Discover which foods are driving your inflammation, and which support your healing.

Book your free 10-minute discovery call to discuss how we might work together, or dive in fully with an initial consultation.

For more information about fees and packages, visit our Fees & Bookings page

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