Broccoli IgE Test in Idaho

What this test measures

Broccoli is a cruciferous vegetable in the Brassica family, which also includes cabbage, cauliflower, kale, and Brussels sprouts. Allergic reactions to broccoli are uncommon but reported, and they can involve mild oral itching or tingling, hives, skin redness, or digestive upset. In some people, symptoms occur because of cross-reactivity between vegetable proteins and pollens rather than a direct sensitivity to broccoli itself.

The test measures allergen-specific IgE in serum using a laboratory immunoassay. A single blood sample is collected, and the laboratory reports the antibody level along with a reactivity class. Because vegetables in the same plant family share some proteins, a broccoli result is often reviewed together with tests for related cruciferous vegetables to see whether reactivity is specific or broad.

A positive result shows sensitization, not necessarily a clinical allergy. Some people have antibodies without symptoms, and reactions depend on exposure and individual sensitivity. A clinician interprets the finding with a careful food and symptom history. Anyone who has had breathing trouble, throat swelling, or fainting after eating should seek emergency care and discuss the episode with a qualified healthcare provider.