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Many people were interested in this issue. It sounds like there are several reputable labs with information online. And others suggested a few books for more information. I did the Carroll Food Intolerance test from my Naturopath which "analyzes a person's blood to determine enzyme compatibility with particular food groups or combinations of foods. This is different from allergy testing, which determines antigen/antibody immune responses." (http://www.salmoncreekclinic.com/carroll_method.html).  It's true that it identified foods that I am intolerant to, but it did not find other foods which also affect me. So I am looking for a more comprehensive test.
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Dr. Kenneth Fine at Enterolab.com has the best tests for foods in my opinion. They are not allergy tests but tests for  IgA reactions to food proteins. It shows whether or not one has an autoimmune attack against their own mucous membrane tissues which of course are all over your body. They perform a stool test that is shown to be extremely accurate and less evasive than the other tests. (Recommended by several people)
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There are two types of tests that allergists generally use:  skin prick and RAST (blood) tests.  Both have high rates of false positives which is why allergists suggest that you do a complete history with them as well.  I recommend two references that might help you:  The Food Allergy and Anaphylaxis Network (FAAN) at www.foodallergy.org<http://www.foodallergy.org> and the book Food Allergies for Dummies by Dr. Robert Wood, an allergist at Johns Hopkins who is an authority in this field.  Even with the high rates of false positives in these tests, I would not rely on any other tests that various doctors pedal.  I say this as the parent of an 18 year old who is severely allergic
(anaphylaxis) to milk, eggs and wheat.
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In addition to regular allergy tests (prick tests and Elissa blood tests), Immunolabs and ALCAT have food toxicity tests.
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My NP used the Vega test.  There are reports that it is only 70% accurate, but I found it to be dead on.  It is non-invasive so it would be great for your daughter.
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I seem to have delayed reaction to my allergies, 2 or 3 days, later, I used Sage Labs.
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All the allergists I know use the skin prick test then have blood drawn to test for titer level.  The blood test also allows you to see whether allergies are getting better or worse.  We also had my 3 yr old tested the same way by a pediatric allergist.
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See if you can find a copy of Dr. Coca's book The Pulse Test, where you can home test for food allergies based on its affect on your metabolism.  The book has been out since the 1950s and is still in print.
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I have found blood tests unreliable.  The scratch test that is done on your skin seems to be the most accurate.  At least that is what I have been told.
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I don't know how reliable these tests are.  I don't think they show food intolerances.  In my opinion you need to do it the old fashion way.  Not eat that food and then eat it and see what happens.
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Keep in mind that Naturopaths can only practice in certain states. The best thing would be to see a Board-certified allergist.


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