Description

The Nut Allergy IgE Blood Test is designed to detect allergic sensitization to various tree nuts and peanuts by measuring levels of Immunoglobulin E (IgE) antibodies in the blood. When the immune system mistakes proteins in nuts as harmful, it produces IgE antibodies, which can lead to allergic reactions ranging from mild to life-threatening.

This test helps identify specific nut allergies and supports diagnosis, dietary planning, and risk assessment for anaphylactic reactions.

Why This Test Is Important:

  • Confirm Nut Allergies
  • Identifies whether your immune system reacts abnormally to one or more nut proteins.
  • Differentiate Between Nut Types
  • Pinpoints exactly which nuts (or legumes, like peanuts) are causing allergic reactions.
  • Risk Assessment for Severe Reactions
  • Helps assess risk for systemic responses, including anaphylaxis, which can occur even with trace exposures.
  • Guide Clinical Management
  • Supports allergists and patients in managing exposure, designing safe meal plans, and considering further tests (like oral food challenges or component-resolved diagnostics).

Symptoms of Nut Allergies:

Reactions can occur within minutes to 2 hours of ingestion or exposure and may include:

  • Itching or swelling of the lips, mouth, or throat
  • Hives, eczema, or flushing
  • Nausea, vomiting, or abdominal pain
  • Wheezing, coughing, or shortness of breath
  • Anaphylaxis (drop in blood pressure, trouble breathing, loss of consciousness)

Nuts Tested in the Panel:

  • Almond IgE
  • Brazil Nut IgE
  • Cashew Nut IgE
  • Hazelnut/Filbert IgE
  • Peanut IgE
  • Pecan Nut IgE
  • Pistachio Nut IgE
  • Walnut IgE
  • Chestnut, Sweet IgE

Important Notes:

  • A positive result does not always confirm clinical allergy. It indicates sensitization, which may or may not result in symptoms upon exposure.
  • Clinical correlation with medical history and symptoms is essential.
  • Follow-up may include component-resolved diagnostics (CRD) or oral food challenge under medical supervision.

Fasting:

  • Not required. You can take this test at any time of day.