Quick Facts
- Sample: Blood
- Fasting: No special preparation is required.
- Turnaround: 3-5 business days. May take longer based on weather, holiday, or lab delays.
What This Test Measures
This test measures the level of kiwi-specific IgE antibodies in your blood (biomarker F084, IgE Kiwi Fruit). IgE antibodies are part of the immune system's response to substances it identifies as allergens. When your body encounters kiwi protein, it may produce IgE antibodies directed against kiwi, and this test quantifies that antibody level from a blood sample. The result reflects sensitization to kiwi as measured by IgE, not a diagnosis of clinical food allergy on its own, and it does not indicate which specific kiwi proteins triggered the response.
Benefits
- Measures kiwi-specific IgE with a single blood draw.
- No fasting or special preparation needed beforehand.
- Straightforward lab visit with online results delivery.
- Provides an objective antibody measurement for your healthcare provider.
- Results available in as little as 3 to 5 days.
Who Is This Test For?
- People who have had symptoms after eating kiwi or kiwi-containing foods.
- Individuals experiencing tingling, swelling, or itching around the mouth after kiwi exposure.
- People who have had digestive symptoms, such as nausea or abdominal discomfort, after eating kiwi.
- Individuals who have experienced hives, congestion, or breathing difficulty they associate with kiwi.
- Anyone advised by a healthcare provider to check IgE sensitization to kiwi.
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What does this test measure, and how is it different from other food allergy tests?
This test measures IgE antibodies specific to kiwi fruit, reported from a blood sample. It is a single allergen test, meaning it evaluates sensitization to kiwi only and does not report results for any other food. Because it measures IgE rather than another antibody class, it reflects the type of immune response typically associated with immediate hypersensitivity reactions, not IgG or other antibody measurements.
2. Who should consider this test, and when?
People who have noticed symptoms such as mouth tingling, swelling, hives, digestive upset, or breathing difficulty after eating kiwi may want to discuss this test with a healthcare provider. It can also be useful for individuals working with a provider to evaluate a suspected kiwi-related reaction. This test looks at kiwi alone, so it is not intended as a general food allergy screening.
3. Do I need to fast or prepare for this test?
No special preparation is required before this blood draw. You do not need to fast, and there are no dietary restrictions listed for this specific test. If you take prescribed medication, do not stop it unless instructed by your healthcare provider.
4. How long does it take to get results?
Results are typically available in 3 to 5 days after your blood sample is collected. This timeframe may be extended due to weather, holidays, or other laboratory delays. Once ready, results are delivered online.
5. How should I interpret my results, and what if they are abnormal?
Interpretation depends on your result value, your symptom history, and other clinical information a healthcare provider will consider together. A detectable level of kiwi specific IgE reflects sensitization and does not by itself confirm a clinical kiwi allergy, and a low or undetectable level does not guarantee that kiwi can be consumed without any reaction. If your result falls outside the expected range, review it with a qualified healthcare provider, who can help determine whether further evaluation is appropriate. This test does not diagnose allergy severity or predict whether a future reaction will occur.
Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
Pre-test preparation
No special preparation is required.
Do not stop prescribed medication unless instructed by your healthcare provider.
Cross-Reactivity
Cross-reactivity happens when the immune system recognizes proteins in one substance as similar to proteins in another, sometimes triggering a reaction to both. This test measures only kiwi specific IgE and does not test for the pollens, foods, or latex described below. The relationships listed here are not an exhaustive list, and they represent possible associations rather than confirmed allergies. Having a kiwi sensitization does not mean you will necessarily react to any of the items below. Depending on your symptoms, history, and healthcare provider's guidance, evaluation of related allergens may sometimes be worth discussing.
- Birch pollen: Kiwi contains proteins that can resemble birch pollen proteins, and cross-reactivity with birch pollen has been reported, sometimes contributing to oral allergy syndrome.
- Grass and timothy pollen: Some kiwi allergens have been shown to cross-react with grass and timothy pollen proteins in laboratory studies.
- Latex: Kiwi is one of the fruits associated with latex-fruit syndrome, where proteins in natural rubber latex resemble certain fruit proteins.
- Banana, avocado, and chestnut: These foods are also part of the latex-fruit syndrome group and have been associated with shared allergenic proteins in some individuals.
- Other fruits (such as peach or apple): In people with pollen-related sensitization, cross-reactive proteins in other fruits have occasionally been associated with mild oral symptoms.
