michael raiti:

> medicine.  It was somewhat informative for me.  IgG
> tests results are supposed to vary with dietary
> changes.

That's one of the things that made me skeptical of the ELISA test I took. It
showed very high IgG scores for foods I had not eaten in months and the
scores did not correlate consistently with the foods I had actually had
reactions to. Also, the results of studies of IgG serum tests like the ELISA
test have been mixed. I remain open-minded on the subject. Theoretically it
makes some sense (although there is debate even on that), but my experience
and laboratory studies haven't proven the effectiveness of such tests.

michael raiti:
> The IgG test that I had done was by Alletess Med Lab
> which is in Massachuetts (sp?).  They have a website 
> www.foodallergy.com.  ...

They say they use a "modified RAST." I know what a RAST test is; I wonder
how they do their particular version of a modified RAST. Normally a RAST
only tests for IgE antibodies and is not used to test foods because of its
historical ineffectiveness in identifying food allergies. Alletess tests for
IgG as well as IgE and tests for food allergies and intolerances. These are
differences from uses of the standard RAST, but Alletess doesn't say how
they do it.