Doctor insights on:
Igg Food Allergy
Essentially allergies occur when your immune system goes crazy and decides to has to fight against things it should be ignoring. The immune system of people without allergies simply ignores the pollen in the air or the dander on their cat while an allergic person's immune system creates cells to fight against the pollen or dander. The allergic reaction causes the ...Read more
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?
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
How can i treat food sensitivities (IGG)to wheat, dairy, and eggs? Causes bloating & constipation. Seemed to develop after many courses of antibiotics
Celiac disease aller: No it is not correct, it is not allergy in true sense.It is an auto immune disease of the small bowel that occurs in some people from infancy to adulthood.When patients are exposed toglidin a gluten protein found in wheat, barley and rye tissue transglutinase enzyme modifies the protein and immune system cross reacts with small bowel causing inflammation, that causes atrophy of villi lining small bow. ...Read moreSee 2 more doctor answers
Avoidance &challenge: Every test out there is imperfect. This is because there are many different mechanisms of food sensitivities- some mediated by igg, e, a & m antibodies, some by lymphocytes, some by inability to digest (lactose), some by inability to metabolize (nightshades) and there aren't tests for all of these. Avoiding suspect foods for 5 days to 1 month & challenging to see if you react is still the best test! ...Read more
Depends : It depends on which type of food allergy testing your doctor is ordered. There are 2 types of food allergy test allergist like us do. Ige mediated food allergy (but not igg because igg food test is unproven) can be done by skin prick test or blood test, which is not interfered by cortisone. However cortisone will interfere with food patch test, which test cell mediated food allergy. ...Read moreSee 1 more doctor answer
Severe allergy: This would be prescribed for a serious food allergy that has the potential to cause as a serious allergic reaction called anaphylaxis. A history of hives or respiratory symptoms caused by a food ingestion with evidence of allergy to that food on testing suggests the need to carry epinephrine. Common foods would include peanut, tree nuts, fish, or shellfish, although any food can be implicated. ...Read moreSee 2 more doctor answers
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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