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Would Gluten Intolerance/celiacs Show Up On A Skin Allergy Test?

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I recently had a skin test to see if i was allergic to many food products including wheat,barley,oats and rye. The test was conducted by an allergist and included many pricks on my back. My rye/wheat/barley/oats skin tests came back neg-would a gluten intolerance and or possiblity of celiacs show up with this test? Or is the only sign ingesting gluten?

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Gluten intolerance or celiac would not show up in a skin prick test because it's not an allergy. It's an autoimmune disease so you'd have to diagnose based on intestinal damage, blood test, stool test, or dietary response.


Gluten-Free since September 15, 2005.

Peanut-Free since July 2006.

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Skin testing tests for IgE reactions, which involve histamine (think hay fever, itchy eyes, watery eyes, runny nose, anaphylaxis). Intolerances (which I think is a dumb name, it still involves an immune reaction so *I* call it an allergy) are usually IgG reactions which can only be tested for with a blood test. IgG reactions are often delayed by a couple hours to several days. My son's eczema flares up 24-48 hours after ingesting the offending item. When they do celiac testing, they test IgG and IgA reactions via blood tests. I believe the IgA component is the auto-immune response, but I'm not 100% certain, so someone correct me if I'm wrong.

My ds never had skin tests, but blood IgE tests revealed no allergies, but he was blood IgG (RAST test) positive to wheat, dairy, soy, egg, and malt and once we removed all of those from his diet his skin was completely free of eczema. I had to really push for the IgG testing. The dr didn't think my insurance would cover it and said that is why he didn't order it even after I specifically asked for it. I told him I would pay (it was $10 per food, so we were looking at $70 for the panel, worth every penny) so he ordered it. Insurance ended up covering it! BTW he was 6 yo when I finally found the dr that would do the test. Prior to that the ped allergist we saw didn't really "believe" in IgG reactions I guess and the primary care docs/PA's/nurse practitioners were not well versed in allergies at all. He'd been seen for various food related issues (my diet since I was nursing and his once he started solids) since shortly after birth.

Nancy

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