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Doctor insights on: Igg Food Allergy

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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

Dr. Michael Zacharisen
569 doctors shared insights

Food Allergy (Definition)

Allergies usually mean there is a response like diarrhea, vomiting, hives, or anaphylaxis when that food is eaten. Other allergies can be more subtle and lead to chronic congestion, headaches, eczema, rashes, constipation, etc. Best answer- if concerned about a particular food eliminate it from your diet and see how you respond. You can ...Read more


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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

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FDA has not approved food allergy tests that use a few dried blood spots for measuring IGg. Are they reliable? What's a good way to test for such?

FDA has not approved food allergy tests that use a few dried blood spots for measuring IGg. Are they reliable? What's a good way to test for such?

Not particularly: IGG to foods will often be up in people with no food sensitivity and as such is unlikely to provide useful information.On the other hand, an elevated IGE to various foods can signal significant food sensitivity and may warrant caution, this is the immune factor associated with anaphylaxis, the most severe reaction. Various companies offer IGE food panels that correlate with allergist skin testing ...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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Dr. John Chiu
2,491 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


Dr. Heidi Fowler
3,408 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