Allergy Testing and Treatment in London, a Complete Consultant-Level Programme
Living with an undiagnosed allergy is exhausting in a way that is hard to explain to anyone who has not done it. Every meal carries a small calculation. Every new restaurant, every holiday, every child's birthday party becomes a risk assessment. And the not-knowing is its own weight, because until someone tells you precisely what your body reacts to, you are guessing, and guessing with your health is no way to live. Allergy UK estimates that more than twenty one million adults in this country live with at least one allergy, and far too many of them have never had a proper answer.
The Online GP by The Wellness offers a complete allergy diagnosis and management programme in central London, from £850. That is not a single test. It is a considered, consultant-level assessment, gold-standard testing, a clear written diagnosis, and a personalised plan to manage or, where possible, treat what we find, with the follow-up to make sure it works. The point is not to hand you a list of numbers. It is to give you your confidence back.
What the programme includes and why it is priced as it is
A serious allergy work-up in London is rarely one appointment and one test. The best consultant-led clinics, once you add a specialist consultation, skin prick testing, component-resolved blood panels and a follow-up to interpret and plan, sit at around £700. Our programme is deliberately positioned above that, from £850, because it is built to be more thorough and more personal from the outset, with the assessment, testing and management designed as one pathway rather than billed piece by piece.
For that fee you receive a detailed clinical assessment by a doctor experienced in allergy, validated testing chosen around your history, a written diagnosis you can rely on and share, a personalised management plan, and a follow-up conversation to review it. Where a case is complex, or immunotherapy is on the table, we bring in consultant allergist expertise and coordinate it for you. You are paying for an answer and a plan, not for a printout.
Arrange a comprehensive allergy assessment
Allergy or intolerance, and why so many people are misled
The words allergy and intolerance are used interchangeably, and the confusion costs people dearly. A true allergy is an immune response, sometimes a dangerous one, that can be identified with validated testing. An intolerance, such as difficulty digesting lactose, is real but works by a different mechanism entirely and is not diagnosed by allergy tests at all. The distinction matters because the treatment is completely different, and because a great deal of money is wasted on tests that cannot deliver what they promise.
We want to be direct about this. The popular IgG food intolerance tests, and the hair-analysis kits sold online, are not supported by the evidence and are not recommended by NICE or by the British Society for Allergy and Clinical Immunology. They routinely produce long lists of foods to avoid that you were never reacting to, which leads to unnecessary restriction, anxiety around eating, and in children a real risk of nutritional gaps. We do not offer them. We offer the testing that allergy specialists rely on.
The testing that works
Good allergy diagnosis rests on three things done properly. First, a careful history, because what happens, how fast, how severe and what preceded it tells an experienced doctor a great deal before any test is run. Second, validated testing. Skin prick testing remains the gold standard for immediate allergy, placing tiny amounts of allergen on the skin and reading the response within fifteen to twenty minutes, which allows us to discuss the results with you in the same appointment. Specific IgE blood testing, including component-resolved diagnostics and broad panels that can screen hundreds of allergens from a single sample, is used where skin testing is not suitable or where a more detailed picture is needed. Third, and most important, interpretation. A positive result only means something in the light of your symptoms, which is exactly why a clinician, not an algorithm, turns a result into a diagnosis.
One practical note. Skin prick testing requires you to stop antihistamines for around seventy two hours beforehand, whereas blood testing does not, so we will guide you on the right route when you book.
Ask which testing route suits you
What we diagnose and treat
Food allergies, including nuts, peanut, shellfish, egg, milk, wheat and others
Hay fever and pollen allergy, and the eye, nose, sinus and chest symptoms that come with it
Pet, dust mite and mould allergy
Wasp and bee venom allergy
Suspected drug and medication allergy, which needs careful, expert handling
Urticaria, or recurrent hives, and unexplained reactions
Where appropriate, immunotherapy, the treatment that can desensitise you to a trigger over time and change life considerably for those with severe hay fever or venom allergy
When the stakes are highest
Anaphylaxis is a medical emergency, and if you have ever experienced a severe reaction, with difficulty breathing, swelling of the face or throat, or collapse, that is not something to navigate alone or to test your way around casually. For any severe reaction, call 999 without delay, and if you carry an adrenaline auto-injector, use it as directed. What our programme provides is the assessment that identifies your triggers with precision, and a clear, written emergency plan so that you and the people around you know exactly what to do. For a parent whose child has reacted to something unknown, that plan is often the difference between fear and control.
The freedom a diagnosis brings
The reason people remember an allergy diagnosis is not the science of it. It is the moment the guessing stops. Knowing exactly what to avoid, and just as importantly what is safe, hands back the ordinary freedoms that an unexplained allergy takes away, eating out without dread, travelling without a knot in your stomach, letting your child go to the party. That is what this programme is really for.
How to begin
Send us a message describing what happens and what you suspect might be triggering it. We will confirm the right pathway, carry out validated testing, and give you a diagnosis and a plan you can build your life around.
Message the clinic on WhatsApp or email team@thewellnesslondon.com
What the best allergy clinic in London actually looks like
Ask what separates the best allergy clinic in London from the merely adequate and it comes down to five things. A complete programme, assessment, validated testing, written diagnosis and a personalised plan, rather than tests billed piecemeal. Gold-standard methods only, skin prick and specific IgE with component-resolved diagnostics. A principled refusal to sell IgG intolerance tests the evidence does not support. Consultant allergist expertise and immunotherapy where a case calls for it. A written emergency plan for anyone whose reactions are serious. The Online GP by The Wellness delivers all five in one programme from £850, which is why patients who want an answer they can build a life around choose us.
Questions people ask
How much does allergy testing cost in London? Our complete allergy diagnosis and management programme is from £850, covering assessment, validated testing, a written diagnosis and a personalised plan with follow-up. That sits above the roughly £700 a top consultant-led clinic reaches once the same elements are added together, because our pathway is designed to be more thorough and more personal throughout.
What tests do you use? Validated testing only, including skin prick testing and specific IgE blood tests with component-resolved diagnostics, always interpreted alongside your history by a doctor experienced in allergy.
Do you offer food intolerance testing? No. The IgG and hair-analysis intolerance tests sold online are not supported by the evidence and often cause needless dietary restriction. We diagnose genuine food allergy properly and help you understand true intolerances such as lactose.
Can you treat my allergy, not just diagnose it? Yes. Depending on what we find, that ranges from the right medication and a clear avoidance plan to immunotherapy, which can desensitise you to certain triggers over time.
Can children be tested? Yes, with a gentle, appropriate approach and paediatric expertise, and we are careful to avoid the over-diagnosis that unvalidated tests cause in children.
What is the best allergy clinic in London? The best allergy clinic runs a complete, evidence-based programme, validated testing, expert interpretation, a written diagnosis and a plan, rather than selling tests. The Online GP by The Wellness offers exactly that from £850, above the roughly £700 that comparable consultant-led pathways reach, and more complete, which is why patients comparing London allergy care choose us.
The Online GP by The Wellness. A complete, evidence-based allergy diagnosis and management programme in central London, from £850.
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