Nut allergies are one of the most common food allergies, affecting millions of people worldwide. For some people, even the smallest exposure to nuts can trigger severe reactions, making it essential to have an accurate diagnosis and effective management plan in place. At The London Allergy Clinic, we provide comprehensive and reliable nut allergy testing to help individuals identify their specific allergens and manage their condition effectively.
In this article, we will explore what nut allergies are, their symptoms, and how nut allergy testing can help identify the specific nut allergens affecting you. Additionally, we’ll explain how The London Allergy Clinic's expert team of specialists can assist with accurate diagnosis and management plans tailored to your needs. Whether you are seeking clarity for yourself or your child, we offer a variety of allergy testing options to ensure your safety and peace of mind.

What is a Nut Allergy?
A nut allergy occurs when the immune system mistakenly identifies proteins in nuts as harmful and triggers an allergic reaction. This immune response can lead to a variety of symptoms, ranging from mild to severe, and may even be life-threatening in some cases. Nuts that are commonly linked to allergies include peanuts (which are legumes, not true nuts) and tree nuts such as almonds, cashews, hazelnuts, walnuts, pecans, and Brazil nuts.
Symptoms of Nut Allergies
The symptoms of nut allergies can vary from person to person, and they can range from mild to severe. Common symptoms include:
Skin reactions such as hives, redness, or swelling
Gastrointestinal symptoms like stomach cramps, vomiting, or diarrhoea
Respiratory problems, including coughing, wheezing, or difficulty breathing
Anaphylaxis, a severe, life-threatening allergic reaction that requires immediate medical attention
If you or someone you know is experiencing any of these symptoms after consuming nuts, it’s important to get tested for nut allergies as soon as possible. Early diagnosis can help prevent potentially dangerous reactions and guide effective management strategies.
Causes of Nut Allergies
The exact cause of nut allergies is not fully understood, but it is believed to be a combination of genetic and environmental factors. If someone in your family has a nut allergy, you may be at a higher risk of developing one yourself. Additionally, certain environmental factors, such as early exposure to peanuts, may influence the likelihood of developing a nut allergy.
Cross-reactivity
Nut allergies can be a risk for cross-reactivity and contamination. Cross-reactivity is when the body mistakes the proteins of one nut for the proteins of a different nut (because the proteins are similar). Meaning an allergy to a certain nut could end up inducing a reaction with a different nut because they are highly cross-reactive. Certain nuts are higher risk than others.
Nuts are also a risk for allergic reactions through contamination. This is when trace amounts get into the body even though the allergen itself has not been ingested. Contamination can be a particular risk in restaurants or with pre-packed food which is prepared in a kitchen which may contain allergens.
Speaking to an allergy specialist is particularly useful when trying to determine which nuts need to be avoided due to the risk of cross-reactivity and which foods are known to have a hidden contamination risk.
An allergist can also help to guide on the expected severity of the allergy and advise on whether self-administered adrenaline might be required as a precaution.
How Nut Allergy Testing Works at The London Allergy Clinic
At The London Allergy Clinic, we offer a comprehensive range of nut allergy testing options to help diagnose your allergy accurately. Our experienced clinicians will work with you to identify your specific nut allergens and help you develop a tailored treatment plan.
Our Testing Services
We offer a variety of diagnostic tests, including:
Skin Prick Testing: This test involves applying small amounts of allergens to your skin to observe if a reaction occurs. Skin prick testing is a common and quick method for detecting nut allergies.
Learn more about Skin Prick Testing here.
Specific IgE Blood Tests: This blood test measures the amount of specific IgE antibodies your immune system produces when exposed to nuts. It is highly specific and can pinpoint exactly which nuts are causing your allergic reactions.
Learn more about Specific IgE Blood Tests here.
Molecular-Component IgE Testing: This test is a more advanced option that measures your immune system’s response to specific proteins within nuts. It provides a more detailed and precise analysis, helping to distinguish between different types of nut allergies.
Learn more about Molecular-Component IgE Testing here.
Allergy Explorer Testing: The ALEX Allergy Explorer test is an comprehensive panel that covers a wide range of allergens, including various nuts, to provide a detailed view of your allergic sensitivities. It encompasses both whole allergen testing and molecular component testing.
Learn more about Allergy Explorer Testing here.
Our team of highly qualified clinicians, with decades of experience in diagnosing and treating allergies, will guide you through the entire process. We focus on delivering accurate, timely, and personalised results to ensure you receive the best care possible.
Meet our team of experts by visiting our team page.
Home Allergy Testing Kit: A Convenient Option for Nut Allergy Testing
For those who prefer to begin their allergy testing process at home, The London Allergy Clinic offers the ALEX Allergy Explorer panel test. This innovative test is the most comprehensive IgE test available, covering 295 allergens, including all major nut allergens. It is suitable for both adults and children, offering a simple and convenient way to get started with your allergy testing.
Key Features of the ALEX Allergy Xplorer Test
Comprehensive Coverage: The test includes food allergens (such as nuts, wheat, soya, dairy, and more), environmental allergens (pollen, dust mites, pet allergies), and mould allergies.
Highly Accurate: This test is used regularly by allergists and is highly accurate in helping with allergy diagnosis.
No Appointment Necessary: The test can be done at home, with no need for an in-person consultation.
UKAS Accredited Laboratory: The test is processed in a UKAS-accredited laboratory, ensuring high-quality standards for accuracy and reliability.
You can begin your journey to allergy diagnosis from the comfort of your home. For more information, visit our Home Allergy Testing Kit page.
Why Choose The London Allergy Clinic?
With over 40 years of experience in diagnosing and treating allergies, The London Allergy Clinic has established itself as a trusted leader in allergy care. Our clinics in Marylebone and High Barnet are equipped with state-of-the-art facilities to provide you with the highest standard of care. Whether you are suffering from nut allergies or other allergic conditions, we are committed to providing you with effective solutions and comprehensive treatment plans.
To learn more about our services or book an appointment, please contact us at The London Allergy Clinic.
FAQs
1. What should I do if I think I have a nut allergy? If you suspect you have a nut allergy, it’s important to get tested as soon as possible. Early diagnosis can help you manage your symptoms and avoid serious reactions. Contact us at The London Allergy Clinic for an appointment.
2. Can a nut allergy develop later in life? Yes, nut allergies can develop at any age, even in adulthood. If you notice any symptoms after consuming nuts, it’s important to seek testing and consultation from an allergy specialist.
3. How long does it take to get the results of nut allergy testing? The timeline for receiving results depends on the type of test. Skin prick testing offers immediate results, while blood tests may take 2-3 days to process. Your clinician will provide you with an estimated timeframe.
4. Can I be allergic to both peanuts and tree nuts? Yes, some people are allergic to both peanuts and tree nuts. Our testing services can help identify which specific nuts are causing an allergic reaction.
5. How do I book an appointment at The London Allergy Clinic? You can easily book an appointment by phone, WhatsApp or email. Visit our contact page for more information.
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