Guest guest Posted April 5, 2000 Report Share Posted April 5, 2000 >Does anyone have any experience with this? I have had blood based IgG and IgE tests done twice in the past few years. While some may know, I will go into a bit of background for others who may not be familiar with the test. IgG, or Immunoglobulin-G, is another part of the immune response system. Most " traditional " doctors think the IgG test is not worthwhile, since most " traditional " doctors only believe that IgE responses have any health impact. Ha. IgG reactions, or delayed food sensitivity, is not an " allergic " reaction (per technical definition) yet an IgG reaction can have a significant impact on the body. When I had my IgG and IgE tests done at the same time, there was a fairly high correlation between the two. But in some cases I was IgG positive, yet IgE negative. When I eliminated those IgG positive foods, I saw improvement in my eczema. IgG tests are basically only good the first time you do them, and ONLY if you haven't eliminated the food from your diet. IgG levels go up and down as you eat the food. After I had gone on a strict elimination diet, I had the IgG levels checked again, and I had ZERO IgG levels on all but one food. BUT if I ate (the now IgG negative) food again, I had an immediate reaction. While positive IgG can have an impact on your health, a negative IgG level does NOT mean you're not going to have a response!! If you have eliminated a food from your diet, a negative IgG level only indicates that you haven't eaten it in a while, so your body didn't produce any IgG to it. It says nothing about your potential reaction to the IgG food. This is unlike an IgE response, which if the IgE level has gone away, you may have lost your allergic tendency to that food. Hope this helps, Kenny Quote Link to comment Share on other sites More sharing options...
Guest guest Posted April 5, 2000 Report Share Posted April 5, 2000 > IgG reactions, or delayed food sensitivity, is not an " allergic " reaction Actually, IgG reactions actually are a type of allergic reaction. They are a type-IV reaction (delayed hypersensativity), just not the classic type-I or immediate hypersensativity reaction commonly mediated by IgE... Check out the Merck Manual (http://www.merck.com/pubs/mmanual/section12/chapter148/148a.htm) for more details on the 4 different types of hypersensativity reactions... -Joy Quote Link to comment Share on other sites More sharing options...
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