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Doctor insights on: Ige Mediated Food Allergy

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Let's say you tested negative for a food allergy on both the IgG and IgE tests. What is the likelihood that you are actually allergic to the item?

Let's say you tested negative for a food allergy on both the IgG and IgE tests. What is the likelihood that you are actually allergic to the item?

Depends: Having igg to a food merely means that you have been exposed to that food and in fact the igg4 (a subclass of igg) may even indicate that you can tolerate that food. The presence of ige to a food alone does not necessarily mean that you are allergic to it. Usually it takes a much higher value above the normal to get a positive response when challenged. ...Read more

Dr. John Chiu
2,586 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


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I recently(one year ago,I am 43 now)suffering from food allergy(egg&milk),the IgE was 1706 one year ago.Took the serum of sensitivity for eggs&milk ?

I recently(one year ago,I am 43 now)suffering from food allergy(egg&milk),the IgE was 1706 one year ago.Took the serum of sensitivity for eggs&milk ?

Avoidance, the only: treatment if that's a true allergy to egg/dairy products, which is kind of rare to start at your age, I'm not sure what exactly is your question, but the high IgE can be irrelevant in food allergy, clear history is the most important parameter, other tests kind of confirm the diagnosis, at any rate keep avoiding eggs and dairy as much as you can, I'm happy to c u if u wish book thru vezeeta 16676 ...Read more

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Is food allergy can be treated through immunotherapy or anti IgE therapy ?

Is food allergy can be treated through immunotherapy or anti IgE therapy  ?

No: It is not recommended to use immunotherapy for treatment of food allergy. There are studies being done to try to desensitize by giving small amounts of the food frequently but these are still in a research phase. Anti-ige treatment with omulazimab is approve for asthma treatment in the us and it will often make the patient less reactive to foods they are allergic to. ...Read more

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Has anybody else been tested for IgG antibody food allergies? I thought allergies were ige?

Has anybody else been tested for IgG antibody food allergies?  I thought allergies were ige?

Different types: There are actually 5 (and probably more) antibody responses to infection or allergens: igg, igm, iga, igd, and ige. Our IgM and igg antibodies are usually produced in response to infection; ige antibodies usually produced in response to allergic reactions. ...Read more

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Can a food allergy cause mental slowness/confusion? I have new food allergies (IgE testing) and trying to make sense of it all. Thanks!

Can a food allergy cause mental slowness/confusion? I have new food allergies (IgE testing) and trying to make sense of it all. Thanks!

Not likely: Many people with no food allergy will produce antibody that reacts to the food allergy panel. Thus, these tests need to be interpreted by experts who treat food allergy daily. Skin testing is often more accurate, but ones history of symptoms that follow an ingestion is critical as well. Yes, dizziness/fogginess can occur with allergy, but is transient immediately following intake. Be well! ...Read more

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I recently had a Ige Blood Test for food allergies. The results can back at tomatoes: moderate Wheat: Low and Soy: Low. What does this mean?

I recently had a Ige Blood Test for food allergies. The results can back at tomatoes: moderate Wheat: Low and Soy: Low. What does this mean?

Complicated: You cannot draw your conclusions from your testing only. If you have a positive test but eat the food every day without symptoms you are not allergic to that food. On the other hand if you have a low positive test but get hives every time you eat it you are allergic. The correct diagnosis is made by a combination of history and test results. You may need a supervised food challenge. ...Read more

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22mo son w/ chronic rhinitis/congestion since 2mo; IgE negative; enlarged adenoid is it worth pursuing food sensitivity to try to avoid surgery?

22mo son w/ chronic rhinitis/congestion since 2mo; IgE negative;  enlarged adenoid    is it worth pursuing food sensitivity to try to avoid surgery?

Consider it.: It is worth to pursue anything that will will make your son better. Anything that gets on his skin, he eats and anything he is exposed to through the environment may trigger symptoms. Adenoids are lymphoid tissue trying to fight off the culprits. They can become so enlarged and infected that they cause problems with breathing and chronic ear infections. Maybe try IgG testing. Prior to surgery. ...Read more

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Are blood tests for allergy/IgE levels to foods considered reliable? Paranoid over certain foods and want to put fears to rest and liberalize my diet.

Are blood tests for allergy/IgE levels to foods considered reliable? Paranoid over certain foods and want to put fears to rest and liberalize my diet.

False positives: If the result of either the Allergy skin test or specific IgE test is negative then it's very reliable. Positive results on the other hand are only accurate 40-60% of the time so would need to be matched with specific allergy symptoms upon eating the food in question. Screening for a bunch of foods without a thorough history is therefore frowned upon. Testing for Celiac somewhat different. ...Read more

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What is a food allergy?

What is a food allergy?

Reaction to a food.: People can become allergic to many substances including certain foods. Some foods are more likely, such as milk, egg, wheat, soybean, shellfish, peanut, or nuts. Reactions can range from rash and itching to anaphylactic shock. ...Read more

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What is a food allergy?

What is a food allergy?

Immunologic response: A food allergy is a specific immunologic response that your body has to a food that can lead to various symptoms. This is different from a food intolerance, such as excess gas, nausea or diarrhea. ...Read more

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How to cure food allergy?

How to cure food allergy?

Avoid: Unfortunately the only totally proven method is avoidance.Slow efforts at tolerance are poor in results. ...Read more

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How to know it is food allergy?

How to know it is food allergy?

Symptoms with eating: Food allergy symptoms occur within minutes to a few hours after ingesting or contact with food leading to hives, itching, swelling, nausea, vomiting, abdominal or less likely anaphylaxis. Avoiding the food resolves it. An allergist can review your symptoms and diet and assess for a food allergy vs. Intolerance. Both allergy blood and skin tests are not perfect, but can help guide the allergist. ...Read more

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What are the symptoms of food allergy?

What are the symptoms of food allergy?

Can vary: Ige mediated food allergy symptoms may include hives, swelling, vomiting, abdominal pain, difficulty breathing, and even drop in blood pressure. Symptoms typically occur within 2 hours of food ingestion. For more info go to foodallergy.Org. ...Read more

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What are common signs of a food allergy?

What are common signs of a food allergy?

Varied: Food allergy symptoms can be quite varied from hives, itching, swelling, eczema, trouble breathing, throat closing, coughing, wheezing, abdominal pain, vomiting, diarrhea. If multiple symptoms occur this is often called anaphylaxis. ...Read more

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Causes of food allergies?

Causes of food allergies?

Great Question: That is a great question and one that is up for debate at every national allergy meeting as we are seeing more and more people diagnosed with food allergies every day. Unfortunately the best minds in the field have yet to come to a consensus and therefore we don't have any way yet of preventing the development of food allergies in children or adults. Continue to stay tuned. ...Read more

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Do food allergies go away?

Yes: Yes, particularly in children. Most children with allergy to milk, egg and soy outgrow their allergies by age 5-6. However, childhood peanut allergy can be lifelong. In adults it is a different story. Their allergies will be lifelong once they develop it; most commonly they develop allergies to shellfish which stays on for life. ...Read more

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How are food allergies tested?

Oral challenge: History trumps skin & blood testing for food allergy. With a history of a reaction like hives, difficulty swallowing, throat tickle, vomiting, asthma or anaphylaxis minutes to hours after eating a food negative skin & blood tests are insufficient to rule-out allergy. A positive test is usually convincing. Mostly we do unblinded challenges in the office reserving double-blind for ambiguous cases. ...Read more

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How common are food allergies?

How common are food allergies?

4-8, 2-4%: 4-8% of children in the USA are allergic to foods, and about 2-4% of adults. Allergic reactions to foods can be life threatening, so you need to be prepared to deal with a reaction at any time. About one hundred fifty people die of food allergic reactions in the USA every year. ...Read more

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Dr. Michael Zacharisen
586 doctors shared insights

Food Allergy (Definition)

Results in a response like diarrhea, vomiting, hives, or anaphylaxis when certain food is eaten. Can also be more subtle and lead to chronic congestion, headaches, ...Read more


Dr. Heidi Fowler
3,475 doctors shared insights

Nutrition (Definition)

Nutrition is the synergistic combination of nutrients found in food and water that allows the human body to perform all essential ...Read more