Allergen - Walnut, Serum

Allergen – Walnut, Serum

Overview

The Allergen – Walnut, Serum test measures walnut-specific IgE antibodies in the blood to determine whether an individual has an allergic sensitization to walnuts. It is commonly recommended for people who experience allergic reactions after consuming walnuts or foods containing walnuts.

When is this test recommended?

Your healthcare provider may advise this test if you experience:

• Itching or tingling in the mouth after eating walnuts
• Skin rash, hives, or eczema flare-ups
• Swelling of the lips, tongue, face, or throat
• Wheezing, coughing, or difficulty breathing
• Stomach pain, nausea, vomiting, or diarrhea after walnut consumption
• Suspected tree nut allergy or unexplained allergic reactions

Why is this test important?

• Identifies walnut-specific allergic sensitization.
• Helps distinguish food allergy from food intolerance.
• Assists doctors in planning allergy management.
• Supports dietary modifications and avoidance strategies.
• Helps reduce the risk of severe allergic reactions, including anaphylaxis.

Sample Required

• Sample Type: Serum
• Method: Allergen-Specific IgE Immunoassay

Preparation

• No fasting is required.
• Inform your doctor about any medications or previous allergic reactions.
• Continue medications only as advised by your physician.

Understanding the Results

• Positive: Indicates sensitization to walnut allergens. Clinical correlation with symptoms is essential for diagnosis.
• Negative: Suggests no detectable walnut-specific IgE; however, allergy cannot be completely ruled out if symptoms strongly suggest an allergy.

Who should consider this test?

• Individuals with suspected tree nut allergies
• Children and adults with recurring allergic symptoms after eating nuts
• Patients with asthma, eczema, or multiple food allergies
• Individuals with a family history of allergic conditions

Note: Test results should always be interpreted along with your medical history, symptoms, and clinical evaluation by a qualified healthcare professional.