Brazil Nut IgE Level
This test measures IgE antibodies specific to Brazil nut proteins. It helps identify immediate-type nut allergy and assess reaction risk.
Turnaround time
Results available 2-3 days after arrival in lab. Doctor's report sent the day after results available (if required)
Biomarkers count
1
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Details about Brazil Nut IgE Level
What is the Brazil Nut IgE Level Test?
The Brazil Nut IgE Level test measures allergen-specific immunoglobulin E (IgE) antibodies directed against proteins found in Brazil nuts. IgE antibodies are responsible for Type I (immediate) allergic reactions, which can range from mild symptoms to severe anaphylaxis.
When the immune system incorrectly identifies Brazil nut proteins as harmful, it produces IgE antibodies. On exposure, these antibodies trigger the release of histamine and other inflammatory mediators, leading to allergic symptoms.
This blood test provides objective evidence of sensitisation and is particularly useful when skin testing is unsuitable or inconclusive.
Why do I need a test for Brazil Nut IgE?
You may need this test if you experience symptoms after consuming Brazil nuts or foods that may contain nut traces. Tree nut allergies are among the most common causes of severe allergic reactions and often persist into adulthood.
Testing helps confirm sensitisation, assess allergy risk and guide dietary avoidance strategies. It is also useful for evaluating cross-reactivity with other tree nuts and monitoring allergy development over time.
Symptoms and scenarios where testing is recommended:
- Itching or swelling of lips, mouth or throat
- Hives or skin rash after nut exposure
- Abdominal pain, nausea or vomiting
- Wheezing or shortness of breath
- Anaphylaxis or severe allergic reaction
- Known or suspected tree nut allergy
- Family history of nut allergy
- Dietary planning and risk assessment
Benefits of the Brazil Nut IgE Test
· Confirms IgE-mediated nut allergy
Identifies immune sensitisation to Brazil nut proteins.
· Assesses risk of immediate allergic reactions
Supports evaluation of reaction severity.
· Improves dietary safety
Helps guide accurate nut avoidance.
· Useful when skin tests are unsuitable
Ideal for patients with eczema or medication interference.
· Supports cross-reactivity assessment
Helps evaluate reactions to related tree nuts.
· Non-invasive testing method
Requires only a blood sample.
· Supports personalised allergy management
Helps guide clinical advice and emergency planning.
· Useful for monitoring sensitisation over time
Tracks changes in IgE levels.
Step-by-Step: How Testing Works
Choose your preferred testing method
You can attend one of our UK partner clinics or arrange a home or hotel visit with a mobile phlebotomist.
Option 1 – In-Clinic Blood Draw
- Select your nearest UK clinic and book an appointment.
- A clinician or phlebotomist collects a venous blood sample.
- The sample is analysed for Brazil nut–specific IgE.
- Results are delivered securely online.
Option 2 – Home or Hotel Phlebotomy (+£60)
- Book a UK-wide home or hotel visit at a convenient time.
- A trained phlebotomist collects your blood sample on-site.
- The sample is packaged and transported to the laboratory.
- Results are uploaded digitally without the need to travel.
Access your report
You can download and share your results with your GP or allergy specialist.
Your Results Explained
Low Levels
Low or undetectable Brazil nut–specific IgE suggests a low likelihood of IgE-mediated allergy.
Clinical correlation is still important if symptoms persist.
Typical UK reference: <0.35 kUA/L.
Normal / Borderline Levels
Borderline results may indicate mild sensitisation.
Further assessment or repeat testing may be recommended.
High Levels
Elevated Brazil nut IgE levels indicate sensitisation and increased allergy risk.
Higher levels are often associated with more significant clinical reactions, though severity varies between individuals.
How It Works
Simple steps to get your results
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.