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Legume Green Bean Allergy Test

A blood test that measures IgE antibodies to green beans, a legume, to help identify an immune reaction when eating them causes itching, hives, digestive upset, or swelling.

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Typical turnaround
1-3 business days
Starting price
From $49
Results
Confidential, online

Quick answer

This test detects IgE antibodies that bind to green bean proteins in a blood sample. It is used when someone reports symptoms after eating green beans or other legumes and a clinician wants objective evidence of sensitization. The result is always reviewed together with the person's symptom history.

What this test measures

Green beans are the pods of the common bean plant and belong to the legume family, whose members share a number of proteins. An IgE-mediated allergy occurs when the immune system misidentifies those proteins and triggers histamine release. The test measures antibodies produced against green bean proteins, providing a laboratory signal that can be compared with reported symptoms.

The test requires a serum sample obtained by a standard blood draw. The laboratory reports green bean-specific IgE, often alongside total IgE and a semiquantitative reactivity class. Because legumes such as peanut, soybean, lentil, and chickpea contain related proteins, some panels include cross-reactive markers to help explain a positive finding.

Adults and children may be tested after reactions limited to the mouth, skin, or digestive tract, and the test is also included in broader food allergy workups. It is not used on its own to diagnose an allergy, and a qualified healthcare provider should review the findings alongside the exposure history.

  • Green bean-specific IgE antibody
  • Total serum IgE
  • Peanut IgE cross-reactant
  • Soybean IgE cross-reactant
  • Lentil IgE cross-reactant
  • Chickpea IgE cross-reactant
  • Profilin-specific IgE
  • Lipid transfer protein (LTP) IgE cross-reactivity

Why people order this test

  • Evaluate symptoms that follow meals containing green beans
  • Check for sensitization to related legumes
  • Support dietary planning with a qualified healthcare provider
  • Document a baseline before an oral food challenge
  • Contribute to a broader food allergy panel
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How to prepare

No fasting is needed for this test. A blood sample is collected at a laboratory, and collection does not need to follow a recent meal. Follow the instructions supplied by the laboratory.

Understanding your results

Results usually return within one to three business days. A positive IgE result means sensitization was detected, while the clinical meaning depends on symptoms and exposure, so a healthcare provider should interpret the report.

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Frequently Asked Questions

Can cooked green beans still cause a reaction?

Cooking changes some proteins but not all, so reactions are possible; a healthcare provider can interpret results with your history.

Does a positive result mean I am definitely allergic?

No. Sensitization on a blood test does not always cause symptoms, which is why clinical history matters.

Are other legumes likely to react too?

Legumes share some proteins, so cross-reactivity is possible, though it does not occur with every related food.

Is this test suitable for children?

Yes. It uses a standard blood draw and can be ordered for both children and adults when clinically appropriate.

How is the sample collected?

A trained phlebotomist collects a small venous blood sample at a laboratory site.

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Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.

Medical disclaimer. The information on LabOrdering.com is educational only and is not medical advice, diagnosis, or treatment. Reference ranges and clinical guidance vary between laboratories. Always consult a qualified healthcare provider about your own results and care.