michael raiti:
> ... I attribute
> some of my food allergy symptoms to cross-reactivities
> to some of my airborne allergens.  If it is the case
> that cross-reactivities are involved then it seems to
> me that some problem foods would not show up on the
> IgG test.

If unknown cross-reactivities can affect the test and are not themselves
tested for and identified, it would seem to reduce the usefulness of the
test data.