Re: food intolerance tests ... alcat vs igg

well, they said that the reactions can be "retarded"... so it may appears from various hours to various days...

The ALCAT test objectively measures "changes in size and number of white blood cells in response to ex vivo challenges with foods, chemicals and other environmental stimuli".


"IgG-mediated food allergies are delayed immune reactions to foods which can occur anywhere from a few hours to a few days after exposure to the reactive foods. This tests measures the level of igG antibodys in patients blood to certain foods."



BUT ...

http://www.allergysa.org/pdfs/intolerance_tests.pdf


The ALCAT test measures cellular swelling or cell lysis when cells are exposed to test substances (e.g. foods) in vitro.

....

Although IgG does play a role in the allergic response,
there is no evidence to suggest that it has a diagnostic value in predicting food allergens or other
substances that may be affecting individuals.xvi The IgG test is also marketed as effective in
predicting foods implicated in Attention Deficit Disorder and obesity. There is no published
evidence for these claims.

...

Other authors have similarly concluded that strong IgG responses have been demonstrated to be a NORMAL physiological response to certain proteins that are
frequently ingested under normal circumstances, and are commonly detectable in healthy adult
patients and children, independent of the presence or absence of food-related symptoms


..........



To date neither ALCAT nor IgG has been shown to have any predictive value in the diagnosis of
allergy or intolerances.

..........

Isolated claims for “success” in occasional
patients by the manufacturers may be related to other factors and SHOULD BE substantiated by
double blind controlled challenge tests using scientific methodology

............


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I made this tests BEFORE i know i had a candida overgrowth (i spent about 1.000$) ... i think all my digestive problems are linked to candida (as they are gettin better with the antifungal treatment) not to food intollerance.


Also here is other interesting link:

http://holfordwatch.info/holford-myths/myth-you-can-diagnose-food-intolerance...