Walnut Allergy Blood Test

What is Walnut Allergy?

Walnut allergy is a food allergy characterized by a hypersensitivity reaction to proteins found in walnuts. It is caused by the immune system mistakenly identifying walnut proteins as harmful invaders and producing IgG antibodies as a defense mechanism. The Walnut (f256) IgG test is the most important test for diagnosis.

RECOMMENDED TEST Walnut (f256) IgG
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What causes walnut allergy?

Walnut allergy is caused by the immune system mistakenly identifying specific proteins in walnuts as harmful substances. When you eat walnuts or foods containing walnut proteins, your immune system produces IgG antibodies to fight off what it perceives as a threat. This hypersensitivity reaction can develop at any age and occurs when your body has been sensitized to walnut proteins through previous exposure, leading to an abnormal immune response during subsequent contact with walnuts.

What is the best test for walnut allergy?

The Walnut (f256) IgG test is the most important blood test for walnut allergy because it measures the specific IgG antibodies your immune system produces in response to walnut proteins. This test detects elevated antibody levels that indicate your body has mounted an immune response against walnuts, helping identify whether you may experience adverse reactions when consuming walnut-containing foods. The test provides valuable information about your immune system's reaction to walnuts and can guide dietary decisions to avoid potential allergic responses.

When should I get tested for walnut allergy?

You should get tested if you experience symptoms like hives, itching, swelling of the lips or throat, digestive issues, or difficulty breathing after eating walnuts or foods containing walnuts. Testing is also recommended if you have unexplained allergic reactions and suspect walnuts might be the cause, if you have other tree nut allergies, or if you want to confirm a walnut sensitivity before making significant dietary changes. Early testing helps you avoid potentially serious reactions and manage your diet safely.

What are the symptoms of walnut allergy?
Walnut allergy symptoms can range from mild to severe and typically appear within minutes to a few hours after exposure. Common symptoms include itching or tingling in the mouth, hives or skin rash, swelling of the lips, face, tongue or throat, digestive problems like nausea, stomach cramps or diarrhea, nasal congestion, and difficulty breathing or wheezing. In severe cases, walnut allergy can cause anaphylaxis, a life-threatening reaction that requires immediate emergency treatment with epinephrine.
Who is at risk for walnut allergy?
People with a family history of food allergies or other allergic conditions like eczema, asthma, or hay fever have a higher risk of developing walnut allergy. Children are more commonly affected than adults, though walnut allergy can develop at any age. Those with allergies to other tree nuts such as pecans, cashews, or almonds are also at increased risk since cross-reactivity between different tree nuts is common. Additionally, individuals with existing food allergies are more likely to develop sensitivity to walnuts.
What happens if walnut allergy is left untreated?
If walnut allergy is left undiagnosed and untreated, you risk repeated exposure to walnut proteins that can trigger increasingly severe allergic reactions over time. Continued consumption of walnuts without knowing you have an allergy can lead to serious health complications, including anaphylaxis, which can be life-threatening without immediate treatment. Unmanaged walnut allergy also causes ongoing symptoms like digestive issues, skin problems, and respiratory difficulties that significantly impact your quality of life and overall health.
Can walnut allergy be diagnosed with a blood test?
Yes, walnut allergy can be diagnosed with a blood test that measures IgG antibodies specific to walnut proteins. The Walnut (f256) IgG blood test detects antibodies your immune system produces in response to walnut exposure, providing objective evidence of an immune reaction. While blood tests are valuable diagnostic tools, they are typically used alongside your clinical history and symptoms to confirm a walnut allergy. Blood testing offers a safe alternative to food challenges and provides quantifiable results that help guide dietary management.
How is walnut allergy treated?
Walnut allergy is primarily treated through strict avoidance of walnuts and walnut-containing products. Reading food labels carefully is essential since walnuts can be hidden in baked goods, salads, sauces, and processed foods. For mild to moderate reactions, antihistamines can help relieve symptoms like itching and hives. People with severe walnut allergy should carry an epinephrine auto-injector at all times for emergency treatment of anaphylaxis. Working with an allergist helps develop a personalized management plan and teaches you how to recognize and respond to allergic reactions quickly.
How can I prevent walnut allergy reactions?
Preventing walnut allergy reactions requires vigilant avoidance of walnuts and careful reading of ingredient labels on all packaged foods. Always inform restaurants about your allergy when dining out and ask about ingredients and food preparation methods to avoid cross-contamination. Be cautious with foods labeled as containing tree nuts or manufactured in facilities that process tree nuts. Educate family members, friends, and caregivers about your allergy so they can help you avoid exposure. Carrying an emergency action plan and epinephrine auto-injector ensures you are prepared to respond quickly if accidental exposure occurs.
What can I do at home for walnut allergy?
At home, create a walnut-free environment by removing all walnut-containing foods from your pantry and clearly labeling safe alternatives. Keep antihistamines on hand for mild reactions and ensure your epinephrine auto-injector is easily accessible and not expired. Learn to recognize early symptoms of an allergic reaction so you can respond quickly. Consider wearing a medical alert bracelet that identifies your walnut allergy in case of emergencies. Work with a nutritionist to find safe, nutritious alternatives to walnuts that provide similar health benefits without triggering your allergy.
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Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

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If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.
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We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

You can read more about our cancellation policy here.
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Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
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Walnut (f256) IgG
Google reviews 505 reviews
$120 $94
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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