Does anyone know how reliable these tests are for testing a wide variety of
foods for adults?  If they are reliable, can any lab do the analysis or
does it need to be done at a specialized place?

>The reason he doesn't show a reaction to standard allergy tests is because
>they only test for IgE antibodies. There are some five Immunoglobins. IgE
>is produced by the immune system and produces immediate reactions. Also
>called histamine reactions. Digestive reactions come from IgG and IgA
>antibodies that are produced in the digestive system. Only blood tests can
>find these. Even then antibodies are only created by the body when it sees
>the offending food. So in an infant RAST/ELISA can't test for foods never
>eaten.

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 Peter Warren
 Blacksburg, VA, USA