Quick Facts
- Sample: Blood
- Fasting: No special preparation is required.
- Turnaround: 2-5 business days. May take longer based on weather, holiday, or lab delays.
What's Included
This panel measures IgE antibody levels in your blood for three legumes.
- Peanut: IgE antibody level measured for peanut.
- Lentil: IgE antibody level measured for lentil.
- Soybean: IgE antibody level measured for soybean.
Benefits
- Measures IgE antibody levels for three specific legumes in one blood draw.
- Provides results for peanut, lentil, and soybean together in one panel.
- Adds objective information to discuss with your healthcare provider.
- Requires no special preparation before your blood draw.
- Delivers results online for easy access and review.
Who Is This Test For?
- You have experienced symptoms you associate with eating legumes, such as tingling around the mouth.
- You have had hives, itching, swelling, or digestive upset after meals containing peanut, lentil, or soybean.
- You want to discuss IgE antibody levels for these three legumes with your provider.
- You regularly eat foods that may contain legumes, such as hummus, dahls, or Chinese cuisine.
- You use products that may contain legumes, such as sports supplements or sauces.
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What does this panel test?
Three legume allergens are covered: peanut, lentil, and soybean. For each one, the panel measures IgE antibodies in your blood. IgE is the antibody type your immune system produces when it identifies a substance as a threat, which can lead to histamine release and allergy symptoms. Results give you information to review with your healthcare provider.
2. Does this panel test every legume?
No. Coverage is limited to peanuts, lentils, and soybean. Other members of the legume family are not measured, even though legumes share a plant family and often appear together in dishes. The panel does not evaluate any food, allergen, or antibody type beyond those listed in What's Included.
3. Who should consider this panel, and when?
Consider it if you have noticed symptoms after eating foods that may contain peanut, lentil, or soybean. Reactions can appear minutes to a few hours after exposure and range from mild to severe. Peanuts and soybeans are among the most common allergens in the United States, and legumes appear in many everyday foods. Seek immediate medical attention for signs of anaphylaxis.
4. Do I need to fast or prepare for this test?
No special preparation is required. You can complete your blood draw without changing your usual routine.
5. How quickly will I get results?
Expect results in 2-5 business days. May take longer based on weather, holiday, or lab delays.
6. How should I interpret my results, and what if one or more are abnormal?
Each result reflects the IgE antibody level for one legume and should be reviewed on its own, in the context of your symptoms and history. A measured antibody level alone does not confirm a food allergy, predict reaction severity, or show whether a food is safe to eat. If any result is outside the reference range, share it with your healthcare provider to discuss next steps.
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 in different foods or pollens. This panel measures only peanut, lentil, and soybean, and it does not test for any of the items discussed below. These examples are not exhaustive, and they represent possible considerations rather than confirmed allergies. Depending on your history, symptoms, or your healthcare provider's guidance, related allergens may be worth discussing.
- Other legumes (such as peas, chickpeas, and beans): Lentil, peanut, and soybean may share allergenic proteins with other legumes, though clinical reactions across legumes vary widely between people.
- Lupine: Cross-reactivity between lupine and peanut has been reported, and some people with peanut allergy may also react to lupine flour.
- Tree nuts: Some people with peanut allergy also have tree nut allergy, which may reflect shared proteins or separate sensitization.
- Birch pollen: Raw peanut and soybean contain proteins similar to birch pollen allergens, and some people with birch pollen allergy report mouth or throat symptoms.
