Question 1

What is Food Allergy?

Accepted Answer

Food allergies occur when the immune system mistakenly identifies certain food proteins as harmful invaders and triggers an allergic reaction. They are caused by elevated levels of IgE antibodies and IgG antibodies that react to specific food proteins such as those found in nuts, shellfish, dairy, eggs, and wheat. The IgG4 Food Panel IV is the most important test for diagnosing food allergies because it measures immune responses to multiple common food allergens simultaneously.

Question 2

What causes food allergies?

Accepted Answer

Food allergies are caused by an overactive immune response to specific proteins in foods. When you eat a food you are allergic to, your immune system produces IgE antibodies and IgG antibodies that recognize the food protein as a threat. This triggers the release of histamine and other chemicals that cause allergic symptoms ranging from mild skin rashes and digestive upset to severe anaphylaxis. Common trigger foods include peanuts, tree nuts, shellfish, fish, milk, eggs, wheat, and soy, though any food can potentially cause an allergic reaction.

Question 3

What is the best test for food allergies?

Accepted Answer

The IgG4 Food Panel IV is the most important test for food allergies because it measures immune responses to multiple common food allergens simultaneously, including reactions to black pepper and other frequently consumed foods. This comprehensive panel detects elevated IgG4 antibody levels that indicate your immune system is reacting to specific foods. For additional screening, the IgG4 Food Panel VI tests for reactions to cashew, celery, coffee, kiwi, pecan, and salmon. If you suspect allergies to specific foods like beans, targeted tests such as the Allergen Specific IgG Bean Green/String or Red Kidney Bean IgG can identify reactions to individual allergens. These blood tests are essential for creating a personalized elimination diet and managing symptoms effectively.

Question 4

When should I get tested for food allergies?

Accepted Answer

You should get tested if you experience recurring symptoms after eating certain foods, including skin reactions like hives or eczema, digestive problems like nausea or diarrhea, respiratory issues like wheezing or nasal congestion, or swelling of the lips, tongue, or throat. Testing is also important if you have a family history of food allergies, if you have unexplained chronic symptoms that might be diet-related, or if you have experienced a severe allergic reaction in the past. Early testing helps identify trigger foods so you can avoid them and prevent potentially dangerous reactions.

Question 5

What are the symptoms of food allergies?

Accepted Answer

Food allergy symptoms typically appear within minutes to two hours after eating the trigger food. Common symptoms include skin reactions like hives, itching, eczema, or swelling of the face, lips, tongue, or throat. Digestive symptoms include nausea, vomiting, abdominal cramping, and diarrhea. Respiratory symptoms can include nasal congestion, difficulty breathing, wheezing, and coughing. In severe cases, food allergies can cause anaphylaxis, a life-threatening reaction that includes a rapid drop in blood pressure, loss of consciousness, and difficulty breathing that requires immediate emergency treatment with epinephrine.

Question 6

Who is at risk for food allergies?

Accepted Answer

Children are at higher risk for food allergies, particularly those with a family history of allergies, asthma, or eczema. People with existing allergies to pollen, dust mites, or pet dander have an increased risk of developing food allergies through cross-reactivity, where similar proteins in foods trigger allergic responses. Individuals with atopic dermatitis or other allergic conditions are more susceptible. While many children outgrow food allergies, allergies to peanuts, tree nuts, fish, and shellfish often persist into adulthood. Adults can also develop new food allergies even if they previously tolerated the food without problems.

Question 7

What happens if food allergies are left untreated?

Accepted Answer

Untreated food allergies can lead to repeated allergic reactions that may become progressively more severe over time. Continued exposure to trigger foods can cause chronic inflammation, persistent digestive problems, skin conditions, and respiratory issues that impact quality of life. The most serious risk is anaphylaxis, a sudden and severe allergic reaction that can be fatal if not treated immediately with epinephrine. People with undiagnosed food allergies may also develop nutritional deficiencies if they unknowingly avoid entire food groups or experience chronic digestive problems that interfere with nutrient absorption. Identifying and managing food allergies through testing and dietary modifications is essential for preventing these complications.

Question 8

Can food allergies be diagnosed with a blood test?

Accepted Answer

Yes, food allergies can be diagnosed with blood tests that measure specific antibodies your immune system produces in response to food proteins. IgE blood tests detect immediate allergic reactions, while IgG and IgG4 tests identify delayed sensitivities and immune responses to specific foods. These blood tests can screen for multiple food allergens simultaneously, making them valuable for comprehensive allergy assessment. Blood testing is particularly useful when skin testing is not possible or when testing for multiple allergens at once. However, blood test results should be interpreted by a healthcare provider in the context of your symptoms and medical history, as elevated antibody levels do not always correlate directly with clinical symptoms.

Question 9

How are food allergies treated?

Accepted Answer

The primary treatment for food allergies is strict avoidance of the trigger foods identified through testing. You should carefully read food labels, ask about ingredients when eating out, and be aware of cross-contamination risks. For mild allergic reactions, antihistamines can help relieve symptoms like itching and hives. People with severe food allergies should carry an epinephrine auto-injector at all times and know how to use it in case of anaphylaxis. Working with an allergist and a registered dietitian can help you develop a safe eating plan that avoids trigger foods while maintaining proper nutrition. Some newer treatments like oral immunotherapy are being developed but are not yet widely available for all food allergies.

Question 10

How can I prevent food allergies?

Accepted Answer

Current research suggests that introducing common allergenic foods to infants between 4 and 6 months of age may help prevent food allergies, rather than delaying introduction as was previously recommended. Breastfeeding for at least four to six months may also provide some protection. If you have existing food allergies, prevention focuses on avoiding cross-contamination and accidental exposure by reading labels carefully, communicating your allergies clearly when dining out, and keeping separate cooking utensils and preparation areas for allergen-free foods. Always carry emergency medication if you have severe allergies, and educate family members, friends, and coworkers about your allergies and what to do in case of a reaction.

Question 11

What natural remedies help with food allergies?

Accepted Answer

While there is no natural cure for food allergies, some approaches may help support immune health and reduce inflammation. Probiotics and gut health support through fermented foods may help modulate immune responses, though they cannot replace strict food avoidance. Quercetin, a natural antihistamine found in onions, apples, and berries, may help reduce mild allergic symptoms. Vitamin C has natural antihistamine properties and supports immune function. Omega-3 fatty acids from fish oil or flaxseed can help reduce inflammation. However, these natural remedies should only be used as complementary approaches alongside proper medical management, and you should never rely on them to prevent or treat severe allergic reactions. Always work with a healthcare provider to develop a comprehensive management plan.

Question 12

How’s this work?

Accepted Answer

Getting your blood test with us is easy, private & backed by the power of science.Long story short:
            
                In the test options, use the filters or search box to narrow your choices and find the test you want.
                If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
                Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
                If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
                When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
                Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
                You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
                If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

Question 13

How do I know which test to get?

Accepted Answer

In the test options, find the test you want.
            If you’re not sure which test to get, we can lend a hand in finding the right option.
            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.

Question 14

When will my lab results be available?

Accepted Answer

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know.
            After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop!
            If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

Question 15

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?

Accepted Answer

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.
            There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.
            Our lab requires an address to be listed to generate an order.

Question 16

Do you accept health insurance?

Accepted Answer

Only HSA & FSA is accepted.
            Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.
            This policy applies to all insurance companies, including federal health insurance programs like Medicare.
            If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

Question 17

Can I cancel my order?

Accepted Answer

Yes.
            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.

Question 18

How can I find a lab location near me?

Accepted Answer

During the ordering process, you’ll be able to select a specific lab near you, with no strings attached!
            You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).
            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.

Food Allergy Blood Test

What is Food Allergy?

What causes food allergies?

What is the best test for food allergies?

When should I get tested for food allergies?

References

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