Brazil Nut IgE Level
Private Brazil Nut IgE Level blood test in London for £55, measuring one food allergy marker with results in approximately 2–3 business days.
Turnaround time
2-3 business days
Biomarkers count
1
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Overview of the Brazil Nut IgE Level
The Brazil Nut IgE Level blood test measures allergen-specific immunoglobulin E antibodies directed against proteins found in Brazil nuts.
IgE antibodies are involved in immediate allergic reactions.
When a person has become sensitised to Brazil nut proteins, exposure can trigger IgE-mediated activation of immune cells and release of histamine and other inflammatory mediators.
Symptoms can range from mild oral or skin reactions to more significant gastrointestinal or respiratory symptoms and, in some people, anaphylaxis.
The test contains 1 biomarker: Brazil Nut.
A positive Brazil nut-specific IgE result demonstrates sensitisation.
Sensitisation means the immune system has produced IgE antibodies that recognise Brazil nut proteins, but it does not automatically prove that eating Brazil nuts will cause symptoms.
Some people have detectable specific IgE without experiencing clinical allergy.
The concentration of specific IgE can provide information about the probability of clinical reactivity, but it does not reliably predict how severe a future allergic reaction may be.
The result should therefore be interpreted alongside previous reaction history, timing of symptoms, other nut allergies and specialist allergy assessment where appropriate.
What Does the Brazil Nut IgE Level Test Check?
This test measures 1 biomarker.
Brazil Nut
Measures IgE antibodies directed against Brazil nut proteins. Detectable or elevated concentrations indicate allergic sensitisation but do not independently confirm clinical Brazil nut allergy or predict reaction severity.
Who May Benefit From the Brazil Nut IgE Level Test?
This test may be suitable for people who have experienced symptoms after eating Brazil nuts or foods that may contain Brazil nut.
Symptoms after eating Brazil nuts - Specific IgE testing can help determine whether sensitisation may contribute to a previous reaction.
Hives or itching after nut exposure - Immediate skin symptoms can occur with IgE-mediated food allergy.
Swelling of the lips or face - Angioedema soon after exposure may warrant targeted allergy investigation.
Mouth or throat symptoms after eating Brazil nuts - Tingling, itching or swelling can occur during an immediate allergic reaction.
Wheezing or breathing symptoms following exposure - Respiratory symptoms can indicate a potentially significant allergic reaction.
Previous suspected anaphylaxis - Severe systemic reactions require specialist allergy assessment and appropriate emergency planning.
Known allergy to another tree nut - Targeted testing may be appropriate where there is a clinical reason to assess Brazil nut sensitisation separately.
Reaction after eating mixed nuts - Specific testing can help determine whether Brazil nut may have been one of the relevant allergens.
People unable to undergo skin-prick testing - Serum-specific IgE can be useful where skin testing is unsuitable.
Specialist-requested allergy testing - The test can be arranged privately where an allergist, paediatrician or GP has requested Brazil nut-specific IgE.
How to Prepare
Do not attempt a home food challenge simply to determine whether you remain allergic.
The laboratory result is most informative when combined with an accurate history of previous exposures and reactions.
Symptoms and Reasons to Consider the Brazil Nut IgE Level Test
IgE-mediated food allergy usually causes symptoms relatively soon after exposure. Timing and reproducibility are important when assessing whether Brazil nut is a likely trigger.
Hives or an itchy rash - Raised, itchy areas of skin can develop during an immediate allergic reaction.
Swelling of the lips or face - Facial swelling can occur as part of IgE-mediated food allergy.
Itching or tingling in the mouth - Oral symptoms may develop shortly after eating the allergen.
Tongue or throat swelling - These symptoms can indicate a potentially serious allergic reaction.
Wheezing or difficulty breathing - Respiratory involvement requires urgent attention during an active reaction.
Vomiting or abdominal pain - Gastrointestinal symptoms may occur during food allergy.
Dizziness or feeling faint - These can be features of a severe systemic reaction.
Repeated symptoms after foods containing Brazil nut - A reproducible exposure-response relationship increases the relevance of targeted testing.
These symptoms can occur for reasons other than food allergy.
A positive Brazil nut-specific IgE result shows sensitisation rather than automatically proving clinical allergy.
Breathing difficulty, significant throat or tongue swelling, collapse or rapidly worsening symptoms following food exposure are medical emergencies and require immediate treatment.
How to Book Your Brazil Nut IgE Level Test
Booking your Brazil Nut IgE Level test with London Blood Tests is simple and designed to fit around your schedule.
Choose the Brazil Nut IgE Level
Select the Brazil Nut IgE Level test online and review the included allergen-specific IgE marker before booking.
Select your sample collection option
Choose an in-clinic blood draw (+£35) or a home or hotel phlebotomy visit (+£60).
Attend your appointment
A trained healthcare professional will collect the required venous blood sample.
Laboratory analysis
Your sample is sent for measurement of IgE antibodies specific to Brazil nut proteins.
Receive your results securely
Your authorised result is sent securely by email, ready to discuss with a GP, allergist or other healthcare professional.
When Will I Receive My Results?
The expected turnaround time for the Brazil Nut IgE Level test is approximately 2–3 business days after your sample arrives at the laboratory.
Specialist allergy analysis and laboratory authorisation are completed before results are released.
Repeat testing or additional analysis may occasionally extend the turnaround.
Understanding Your Results
A low or undetectable Brazil nut-specific IgE result means little or no measurable sensitisation was detected.
This makes IgE-mediated Brazil nut allergy less likely but does not completely override a convincing history of immediate reactions.
A detectable or elevated result indicates sensitisation.
Sensitisation does not necessarily mean that eating Brazil nut will produce symptoms.
In general, increasing allergen-specific IgE concentrations can be associated with a greater probability of clinical allergy.
However, specific IgE concentration does not reliably predict reaction severity.
A person with a relatively low result can still experience a serious reaction, while another person with a higher result may have less severe symptoms.
Where the clinical history and blood result do not agree, an allergy specialist may recommend additional assessment.
Why Book With London Blood Tests?
Private Brazil nut allergy testing in London - Access targeted Brazil nut-specific IgE measurement.
One targeted food allergen - Test Brazil nut sensitisation without booking a broad allergy panel.
No deliberate allergen exposure required - You do not need to eat Brazil nut before testing.
Antihistamines usually do not need to be stopped - Serum-specific IgE is generally unaffected by antihistamine medication.
Useful after mixed-nut reactions - Targeted testing can help clarify whether Brazil nut sensitisation is present.
Specialist allergy laboratory analysis - Your sample is processed using allergen-specific IgE testing.
Clinic and home visit options - Choose an in-clinic blood draw or home or hotel collection depending on availability.
Secure results by email - Receive your authorised result securely.
Clear pricing before booking - The Brazil Nut IgE Level test is priced at £55, with collection charges shown separately.
Private Brazil Nut IgE Level Blood Test in London
London Blood Tests provides the Brazil Nut IgE Level blood test in London for adults and children requiring targeted assessment of suspected Brazil nut sensitisation.
The test costs £55 and measures one biomarker: Brazil Nut.
A positive result demonstrates IgE sensitisation rather than automatically confirming that a clinical allergy is present.
Clinic and home or hotel phlebotomy options are available depending on location and availability.
Results should be interpreted alongside previous reaction history, other nut allergies and specialist assessment where appropriate.