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 IgE antibody levels specific to cauliflower (F291-IgE Cauliflower) in a blood sample. IgE antibodies are produced by your immune system when it identifies a substance, in this case a cauliflower protein, as a potential threat. Elevated levels of cauliflower-specific IgE may indicate sensitization to this particular vegetable. This is a single-analyte blood test measuring one biomarker and does not evaluate any other food, allergen, or antibody class.
Benefits
- Measures IgE sensitization specific to cauliflower
- Uses a simple blood sample with no special preparation
- Offers a convenient way to check cauliflower-specific IgE levels
- Provides results your healthcare provider can help interpret
- Delivers results online within a few days
Who Is This Test For?
- People who have noticed symptoms after eating cauliflower or cauliflower-based products
- Individuals following keto, vegan, or gluten-free diets that often include cauliflower rice, crust, or pasta
- People whose healthcare provider recommends checking cauliflower-specific IgE
- Individuals wanting a convenient way to check for cauliflower sensitization
- People building a picture of their IgE sensitization patterns alongside other individually ordered tests
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 the level of IgE antibody specific to cauliflower (biomarker F291-IgE Cauliflower) in your blood. It is a single-allergen test, meaning it evaluates cauliflower only and does not screen for other foods, other Brassicaceae vegetables, or other antibody classes such as IgG. Some food allergy tests screen many foods at once or measure different antibodies; this test is scoped specifically to cauliflower IgE.
2. Who should consider this test, and when?
People who suspect a reaction after eating cauliflower, whole or in products like cauliflower rice, pizza crust, or mashed cauliflower, may find this test relevant to discuss with a healthcare provider. It may also be useful for those wanting to check cauliflower-specific IgE as part of a broader evaluation guided by their provider, particularly if cauliflower is a regular part of their diet.
3. Do I need to fast or prepare for this test?
No special preparation is required for this test. You can visit the lab for your blood draw without fasting or making dietary changes beforehand.
4. How quickly will I get results?
Results are typically available in 3 to 5 days. Turnaround may take longer due to weather, holidays, or other lab delays.
5. How should I interpret my results, and what if they are abnormal?
Interpretation depends on your specific result, your symptom history, and other clinical information, so results are best reviewed with a qualified healthcare provider rather than interpreted alone. An elevated cauliflower-specific IgE level suggests sensitization but does not by itself confirm a clinical food allergy, predict reaction severity, or indicate whether cauliflower is safe to eat. If your result falls outside the expected range, your healthcare provider can help determine whether further evaluation is appropriate.
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.
Cross-Reactivity
Cross-reactivity may occur when the immune system recognizes similar proteins shared between different allergen sources, such as a food and a pollen, even though the two are biologically distinct. This test measures only IgE antibodies specific to cauliflower and does not test for the pollens or other foods discussed below. The relationships described here are not an exhaustive list, and they represent possible additional considerations rather than confirmed allergies. Cross-reactivity does not mean a person sensitized to cauliflower will necessarily experience a clinical reaction to another listed substance. Depending on your symptoms, history, or previous reactions, discussing related allergen testing with your healthcare provider may be worth considering.
- Mugwort pollen: Research on the mugwort-mustard allergy syndrome has reported that people sensitized to mugwort pollen may also show sensitization to several Brassicaceae vegetables, including cauliflower, cabbage, and broccoli.
- Other Brassicaceae vegetables (broccoli, cabbage, Brussels sprouts, mustard): Laboratory studies have found that antibody binding to cauliflower and broccoli can be partly blocked by a lipid transfer protein found in cabbage, suggesting these closely related vegetables may share some allergenic proteins.
- Peach and other Rosaceae fruits: Some of the shared proteins involved in Brassicaceae cross-reactivity are lipid transfer proteins, a protein family also linked to reported associations between mugwort sensitization and peach allergy in some patient groups.
These associations come from studies of specific patient groups and do not apply to everyone with cauliflower sensitization. A positive result on this test does not predict whether you will react to mugwort pollen or the other foods listed above, and none of these substances are included in this laboratory test.
