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MediBalans › Diagnostics › ALCAT Food Intolerance Test
Cell Science Systems · Official Swedish Distributor
Innate Immune Response · Flow Cytometry · 250+ Substances

The ALCAT Test.
The immune system's hidden load.

Standard allergy tests look for IgE — the mechanism behind anaphylaxis and hay fever. ALCAT looks at something entirely different: how your innate immune cells physically respond to foods. It's the test that explains the symptoms no other test found.

IBS Chronic Fatigue Skin Conditions Autoimmunity Migraine Metabolic Imbalance
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Top-rated clinic in Sweden
Verified patient reviews · Reco.se
Reco.seVerified
250+Substances Tested
FlowCytometry · Gold standard
4Severity Grades
~45Published Studies
Global Constraint Rule

Why ALCAT
comes first

Reactive foods are not one of many problems in patients with chronic inflammation — they are in most cases the dominant, modifiable source of inflammatory burden. The innate immune system has finite capacity. When that capacity is consumed by daily food reactions, insufficient resources remain to manage pathogens, regulate the microbiome and resolve inflammation.

This is why patients with IBS, skin conditions, chronic fatigue and autoimmunity often improve dramatically when reactive foods are removed — not because they "ate wrong" but because their immune system can now direct capacity where it is needed.

Scientific Validation

The PNAS 2025 paper by Yamagishi & Hatakeyama independently validated the GCR principle that biological systems are governed by dominant constraints. MediBalans developed GCR from clinical observation — the science confirmed it afterwards.

The GCR Framework · Why ALCAT is the foundation

Identify the primary inflammatory source — before everything else

1
The innate immune system is finite. Every reactive food that triggers an immune reaction 2–4 times per day consumes capacity that cannot be used for pathogen defence or inflammation resolution.
2
Microbiome dysbiosis is often secondary. Immune burden from reactive foods alters the gut environment and favours dysbiogenic bacteria. Remove the source — the microbiome often normalises without further intervention.
3
ALCAT identifies the specific burden. Not a generic elimination diet based on guesswork — but an individual, severity-hierarchical map of exactly which substances burden your patient's immune system.
Clinical Conditions

We investigate and treat

ALCAT-reactive foods drive inflammation throughout the body — not only in the gut. These are the conditions where ALCAT testing consistently yields clinically actionable findings.

IBS & Gut Disorders

IBS is not a diagnosis — it is a symptom description. Bloating, diarrhoea, constipation and cramping always have a biochemical cause. In up to 80% of IBS cases, reactive foods are the primary or decisive driver of mucosal inflammation and barrier dysfunction.

Why standard testing misses it: IgE allergy tests detect immediate hypersensitivity. ALCAT reactions are delayed by 2–72 hours — the patient never connects the symptoms to the specific food. Standard blood tests show nothing abnormal.

In the Yale 2017 study (DBPC-RCT, 58 IBS patients), ALCAT-guided diets produced statistically significant improvement in IBS symptom severity compared to sham diet. Reduction in plasma neutrophil elastase confirmed the innate immune inflammatory pathway involvement.

GCR Perspective · IBS

Reactive foods are the primary constraint in most IBS patients. Microbiome dysbiosis, increased intestinal permeability and motility disturbances are often secondary consequences — not primary causes. Remove the primary burden and the gut environment normalises.

Primary Test

ALCAT 250+ Foods & Additives

Identifies reactive foods, additives, colorants and preservatives. Severity grading (severe/moderate/mild) guides elimination order and rotation diet design.

Complement

GI Effects® Stool Profile

PCR-based microbiome analysis confirms whether gut flora has been affected secondarily. Beta-glucuronidase, calprotectin and barrier markers provide the parallel picture.

Severe Cases

CMA — Cellular Micronutrient Analysis

Reactive foods drive malabsorption. CMA shows which intracellular nutrients have been depleted as a consequence of chronic gut inflammation.

Chronic Fatigue
& ME/CFS

Exhaustion despite normal blood tests. Chronic activation of the innate immune system via daily food reactions is a significant but underappreciated factor in post-viral fatigue and energy depletion conditions.

The mechanism: Every immune reaction against a reactive food requires energy — for cytokine production, cell activation and inflammation resolution. In patients with 15–30 reactive foods consumed daily, this represents a constant background mobilisation of the immune system that directly contributes to energy depletion.

Clinical observation: A significant proportion of ME/CFS patients report improved energy and reduced post-exertional malaise within 6–12 weeks of ALCAT-guided elimination — without any other change in treatment protocol.

GCR Perspective · ME/CFS

In ME/CFS, the energy budget is extremely limited. Every source of chronic immune activation competes for that resource. ALCAT-based food elimination is often the single intervention with the clearest energy effect — precisely because it reduces the constantly ongoing immune burden.

Primary Test

ALCAT 250+ Foods & Additives

Identifies immune-burdening foods. Elimination reduces chronic activation and frees immune capacity for recovery and mitochondrial function.

Complement

CMA — Cellular Micronutrient Analysis

Intracellular energy production requires magnesium, CoQ10, B-vitamins and carnitine. CMA identifies specific intracellular deficiencies contributing to mitochondrial dysfunction.

Complement

MethylDetox — 38 Genes

Methylation capacity governs cytokine clearance and neurotransmitter synthesis. Genetic variants in MTHFR and COMT are common in ME/CFS populations and affect treatment response.

Eczema, Acne
& Psoriasis

The skin is a mirror of the immune system's state. Chronic skin manifestations of food-driven immune reactivity are among the most common findings in ALCAT-tested patients with skin conditions — and the fastest-responding to elimination.

The mechanism: ALCAT reactions activate neutrophils and monocytes which release inflammatory cytokines systemically. In the skin, this manifests as eczema, acne or psoriasis exacerbations — depending on the patient's genetic susceptibility and immunological phenotype.

Berardi et al. (EAACI 2009, University of Pavia) demonstrated diagnostic value of ALCAT in patients with cutaneous diseases, linking food intolerance to dermatological conditions in a clinical population.

GCR Perspective · Skin

Topical treatments suppress symptoms. ALCAT-based elimination addresses the systemic inflammatory source. The combination produces faster and more sustained results — and the topical treatment can often be tapered once the primary burden is eliminated.

Primary Test

ALCAT 250+ Including Mould Species

Foods, additives and mould species. Mould reactivity is underdiagnosed in eczema and psoriasis — included in ALCAT's panels and clinically relevant for a significant proportion of skin patients.

Complement

CMA — Cellular Micronutrient Analysis

Zinc, selenium and omega-3 are critical for skin barrier function and inflammation resolution. CMA shows intracellular status — not just serum levels.

Autoimmune Component

GI Effects® + MethylDetox

In psoriasis with inflammatory bowel disease component: GI Effects maps the gut's immunological status. MethylDetox identifies genetic variants governing inflammation resolution capacity.

Autoimmunity
& Systemic Inflammation

In autoimmune conditions — Hashimoto's, rheumatoid arthritis, SLE, MS, psoriatic arthritis — the chronic immune activation state is central. Reactive foods maintain the activation state that drives autoimmune pathology.

The mechanism: Reactive foods drive intestinal permeability ("leaky gut") that allows food antigens to reach the systemic circulation and stimulate immune cells outside the gut's normal regulatory control. In genetically predisposed patients, this can trigger and sustain autoimmune reactions against the body's own tissue via molecular mimicry.

Clinical observation: Patients with Hashimoto's consistently show improvement in TPO antibodies and symptom control following ALCAT-guided elimination — likely via reduced gut permeability and decreased systemic immune activation.

GCR Perspective · Autoimmunity

Autoimmunity's primary constraint is the chronic immune activation state — not the autoantibodies that are measured. ALCAT addresses one of the most important maintenance factors behind that activation state. Always combined with MethylDetox to map the detoxification and methylation capacity that governs how effectively inflammation can be resolved.

Primary Test

ALCAT 250+ Foods, Chemicals & Moulds

Full panel to identify all potential immune-burdening substances. In autoimmunity, it's especially important to include chemical and mould reactivity — frequently overlooked triggers.

Complement

MethylDetox — 38 Genes

COMT variants affect oestrogen clearance and inflammation resolution. MTHFR affects folate metabolism and homocysteine clearance. Essential for individualising supplementation.

Complement

CMA — Cellular Micronutrient Analysis

Autoimmune patients frequently have specific intracellular deficiencies of vitamin D, selenium and zinc. CMA measures actual intracellular levels — not serum transport.

Migraine & Brain Fog

Neuroinflammatory pathways are sensitive to peripheral immune activation. Reactive foods that trigger systemic cytokine production can cross the blood-brain barrier and trigger neuroinflammation manifesting as migraine, chronic headache and cognitive clouding.

The mechanism: Histamine release from food-triggered mast cell reactions and neutrophil activation drives vasodilation in cerebral vessels. Prostaglandin E2 and TNF-alpha from ALCAT reactions sensitise trigeminovascular pain pathways. Patients with frequent migraine often have multiple reactive foods — not a single "migraine food".

Clinical observation: ALCAT-guided elimination reduces migraine frequency in responsive patients by 40–70% — without pharmacological intervention. Tyramine elimination and standard migraine diets miss the mechanism because they address IgE, not innate immune response.

GCR Perspective · Neurology

Brain fog in chronic fatigue and migraine share the same mechanism: peripheral immune activation driving neuroinflammation. ALCAT is the single most effective intervention for reducing peripheral inflammatory burden — and thereby the brain's neuroinflammatory state.

Primary Test

ALCAT 250+ Including Additives & Preservatives

Food additives — tartrazine (E102), benzoates, sulphites and glutamate — are common triggers in migraine and neurological symptoms. Included in ALCAT's panel; cannot be identified via IgE testing.

Complement

MethylDetox — 38 Genes

The COMT variant determines dopamine and noradrenaline clearance speed. High COMT activity affects serotonin turnover and migraine threshold. Genetic context for the neurotransmitter profile.

Complement

CMA — Magnesium & B2

Intracellular magnesium deficiency is the single most common correctable factor in chronic migraine. B2 (riboflavin) is a validated migraine prophylaxis in RCTs. CMA shows actual intracellular status of both.

Immunological Mechanism

IgE vs innate immune response —
two entirely different pathways

Standard allergy tests measure IgE antibodies — the mechanism behind classic allergy: anaphylaxis, urticaria, hay fever. Reactions are immediate (seconds to minutes) and produce an unambiguous clinical picture.

ALCAT measures the innate immune response — a fundamentally different mechanism. Neutrophils, monocytes and eosinophils react to food antigens via receptors on the cell surface. Flow cytometry measures the exact cellular changes: swelling, degranulation, fragmentation.

Reactions are delayed by 2–72 hours — the patient never connects the symptoms to the specific food that caused the reaction. Standard blood tests show nothing abnormal. This is precisely why these patients spend 5–15 years in the healthcare system without a diagnosis.

IgE
IgE allergy — immediate hypersensitivity
Mast cells and basophils. Reaction within seconds to minutes. Clear clinical picture: urticaria, angioedema, anaphylaxis. Detected by standard RAST/ImmunoCAP.
Standard allergy test
IgG
IgG antibodies — exposure marker
Measures antibodies to foods — but IgG is a sign of exposure, not necessarily clinical reactivity. High IgG to a food can be entirely normal and tolerogenic.
Exposure marker, not reactivity
INN
Innate immune response — the ALCAT mechanism
Neutrophils, monocytes and eosinophils are activated. PKC-dependent pathway. DNA and myeloperoxidase are released. Delayed reaction: 2–72 hours. Produces IBS, fatigue, skin, migraine.
Measured by ALCAT via flow cytometry
CSS
Flow cytometry — cellular measurement
ALCAT exposes white blood cells to each substance and measures change in cell volume and complexity. Four severity grades: severe, moderate, mild, borderline. Objective cellular measurement.
Cell Science Systems · CLIA-certified
The GCR Protocol

How we work with ALCAT findings

ALCAT results are not an elimination list — they are the entry point to a structured clinical protocol that addresses immune burden systematically and in priority order.

01
Clinical Consultation & GCR Prioritisation
45-minute review of symptom picture, dietary history and clinical prioritisation. The GCR framework determines whether ALCAT is the primary investigation or whether parallel constraint investigations (CMA, MethylDetox) are indicated based on your specific presentation.
GCR AssessmentMedical History
02
Blood Draw & Laboratory Analysis
Standard venous blood draw at MediBalans or the nearest collection station. White blood cells are isolated and exposed to each of 250+ substances. Flow cytometry measures cellular responses individually. Cell Science Systems CLIA-certified laboratory in the USA. Turnaround: 5–7 business days.
Flow Cytometry250+ Substances5–7 Days
03
Result Interpretation & Rotation Diet
Results are reviewed by Dr Mario Anthis in the context of your complete clinical picture. Each reactive substance is graded: severe (red), moderate (orange), mild (yellow), borderline (green). An individual rotation diet is designed — not a generic elimination diet — with elimination order based on severity grade and clinical relevance.
4-Grade HierarchyRotation DietIndividual
04
3–6 Month Elimination Protocol & Follow-up
Structured elimination protocol over 3–6 months allowing the immune system time to recover capacity. Staged reintroduction of mild and borderline-reactive foods. Follow-up consultations assess treatment response and adjust the protocol based on clinical response and any parallel diagnostic findings.
3–6 MonthsStaged ReintroFollow-up
Why MediBalans

What sets us apart

01

Official distributor — not an intermediary

MediBalans is Cell Science Systems' official Swedish distributor. This means a direct laboratory relationship, full access to all ALCAT panels including specialist panels, and clinical support directly from the Cell Science Systems scientific team.

02

ALCAT is never interpreted in isolation

ALCAT results are integrated with CMA findings (intracellular nutritional status), MethylDetox data (methylation capacity) and GI Effects data (microbiome) via the GCR framework. Interpretation is always multidimensional — a lab result without clinical context is worthless.

03

We sell no supplements

MediBalans does not sell nutritional supplements. This is a deliberate ethical position — it eliminates conflicts of interest and guarantees that all recommendations are based exclusively on what the measured data shows, not on product sales.

ALCAT vs Alternatives

Which test gives the right answer?

Three common test types — three fundamentally different mechanisms. Choosing the wrong test means looking for the right answer in the wrong place.

FeatureIgE Allergy TestIgG Antibody TestALCAT (Innate Immune)
MechanismMast cells, IgE antibodiesIgG antibodiesNeutrophils, monocytes, eosinophils
Reaction timeSeconds–minutesHours–days2–72 hours (individual)
SymptomsUrticaria, anaphylaxis, breathingVariable, non-specificIBS, fatigue, skin, migraine, joints
What is measuredAntibody level in serumAntibody level in serumActual cellular reaction — functional
Clinical validationStrong (anaphylaxis)Weak — IgG = exposure, not reactivityYale DBPC-RCT + ~45 published studies
Covers additivesRarelyRarelyYes — 250+ including colorants, benzoates
Covers mould speciesLimitedNoYes — clinically relevant in IBS and skin
"I had IBS for nine years. Four gastroenterologists, two colonoscopies and an antidepressant nobody explained to me. ALCAT showed severe reactivity to wheat, eggs and nine other foods I ate every day. Three months after elimination I'm essentially symptom-free."
Maria K. IBS · Food Intolerance · Verified on Reco.se
Questions

About the ALCAT test

ALCAT (Antigen Leukocyte Cellular Antibody Test) measures the innate immune system's response to 250+ foods, additives and chemicals. A blood sample is taken and white blood cells are exposed to each substance. Flow cytometry measures changes in cell volume and complexity — indicating activation, degranulation or apoptosis. ALCAT identifies delayed, non-IgE immune reactivity that standard allergy tests cannot detect.

Standard IgE tests measure antibodies to foods — the mechanism behind classic allergy: anaphylaxis, urticaria, hay fever. Reactions are immediate (seconds to minutes). ALCAT measures the innate immune response via neutrophils, monocytes and eosinophils — a fundamentally different system. ALCAT reactions are delayed by 2–72 hours and produce symptoms such as IBS, fatigue, skin problems and joint pain. A patient can test negative on all IgE allergy tests and still have significant immune reactivity to dozens of foods.

MediBalans uses the ALCAT Comprehensive panel covering 250+ substances — foods across all major categories (grains, dairy, meat, fish, vegetables, fruits, nuts), food additives, colorants, preservatives, mould species and medicinal herbs. Panels can be customised based on the patient's clinical history and dietary habits.

The GCR framework identifies the highest-burden constraint limiting recovery. In chronic inflammatory and autoimmune conditions, ALCAT-identified reactive foods consistently represent the largest, most accessible modifiable source of immune burden. Removing reactive foods frees innate immune capacity — enabling redirection of resources towards pathogenic threats and microbiome regulation.

Most patients report noticeable improvement within 3–6 weeks of eliminating severely and moderately reactive foods. Full effect is typically seen at 3 months. Patients with long-standing chronic illness may require 6 months for full clinical response. Speed depends on disease duration, number of reactive foods and compliance with the elimination protocol.

The elimination period allows the immune system to recover capacity and tolerance to rebuild. After 3–6 months, mildly and borderline-reactive foods are reintroduced one at a time with observation for reactions. Severely reactive foods should be avoided longer or permanently. A rotation diet — consuming each food no more than once every four days — reduces the risk of reactivity rebuilding.

Scientific References

Published evidence for ALCAT

Approximately 45 published studies support ALCAT testing, including double-blind protocols from Yale, Baylor, Northern Illinois University and the University of Pavia.

[1]
Ali A, Weiss TR, McKee D et al. Primary ALCAT RCT: Double-blind, randomised, placebo-controlled trial of 58 IBS patients. ALCAT-guided diets produced statistically significant improvement in IBS symptom severity vs sham diet. Reduction in plasma neutrophil elastase confirmed innate immune inflammatory pathway involvement. BMJ Open Gastroenterology 2017;4:e000164 ↗
[2]
Garcia-Martinez I, Weiss TR, Ali A, Mehal WZ. Mechanistic study demonstrating that ALCAT-identified "severe" food reactions were associated with release of DNA and myeloperoxidase by innate immune leukocytes via a PKC-dependent pathway — establishing the molecular mechanism measured by the test. J Alternative & Complementary Medicine. 2016. Presented at Yale School of Medicine.
[3]
Fell P, Brostoff J, Pasula MJ. High correlation between ALCAT test results and double-blind food challenge outcomes in food-sensitive patients, establishing analytical validity against the oral provocation gold standard. 45th Annual Congress ACAI, Los Angeles. Annals of Allergy. 1988.
[4]
Berardi L, De Amici M et al. ALCAT identified food intolerance in patients with gastrointestinal and cutaneous symptoms at the University of Pavia, demonstrating clinical applicability across GI and dermatological patient populations. EAACI Congress Warsaw. Eur J Allergy Clin Immunol. 2009;64:490.
[5]
Yamagishi M, Hatakeyama S. Independent validation of the GCR constraint-hierarchy principle — the theoretical foundation for MediBalans' clinical prioritisation of ALCAT as the primary investigation. PNAS. 2025.
Evidence context: The Yale 2017 study represents the strongest independent evidence: a DBPC-RCT published in a BMJ-family journal. ALCAT measures innate cellular reactivity — a distinct immune pathway from IgE. Most ALCAT publications are conference abstracts rather than full peer-reviewed manuscripts. MediBalans positions ALCAT as the strongest available tool for identifying non-IgE food-driven immune reactivity — always within the framework of a complete clinical protocol.
Related Tests

Frequently combined with this test

Intracellular · Cell Science Systems

CMA — Cellular Nutrient Analysis

Chronic immune activation drives malabsorption. CMA shows which nutrients have been depleted intracellularly.
Genetics · Proprietary

MethylDetox — 38 Genes

Methylation capacity governs cytokine clearance. The interpretive context for ALCAT in autoimmunity.
Microbiome · Genova

GI Effects® Stool Profile

ALCAT identifies the immune burden. GI Effects confirms whether the microbiome has been affected secondarily.
Next Step

Find out what your immune system
is actually reacting to.

ALCAT results are interpreted by Dr Mario Anthis and integrated into a complete diagnostic and treatment protocol. We sell no supplements — only measured data and clinical context.

Book Consultation Also: CMA Cellular Nutrients →
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