Understanding Lab Tests for Walnut Allergy
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Walnut allergy is a food allergy characterized by a hypersensitivity reaction to proteins found in walnuts. When someone with a walnut allergy is exposed to walnut proteins, their immune system produces antibodies as a defense mechanism, which can be detected through specialized blood testing.
Recommended Test
Walnut (f256) IgG
This test measures IgG antibodies in the blood that are produced by the immune system in response to walnut proteins. High levels of Walnut (f256) IgG antibodies may indicate a possible allergic reaction or sensitivity to walnuts, helping to identify individuals who may experience adverse reactions when consuming walnut-containing foods.
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How Blood Testing Helps Identify Walnut Allergy
While the diagnosis of food allergies often involves clinical history and sometimes skin tests, blood tests play a crucial role in detecting specific immune responses. These tests measure antibodies produced by the immune system in response to walnut proteins, providing valuable information about potential allergic reactions.
Understanding Your Results
Elevated IgG antibodies to walnut proteins suggest that your immune system has recognized walnut as a potential threat and has mounted an immune response. This information can be valuable for making informed dietary decisions and avoiding potential allergic reactions.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider or allergist for proper diagnosis, interpretation of test results, and treatment recommendations for food allergies.
