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At-Home Secretory IgA Food Intolerance Test Now Available Through York
Nutritional Laboratories

HOLLYWOOD, FL--June 2, 2004 -- York Nutritional Laboratories has announced
it will now provide the saSCAN Secretory IgA Food Intolerance Kit, which
can conveniently be administered in the comfort of one’s own home or in
the privacy of a doctor's office.  Unlike competing tests, which require a
full blood draw, the saSCAN can be performed by means of a simple saliva
collection mechanism.  Originally developed by Diagnos-Techs, the saSCAN
screens the four most common culprit foods involved in IgA-mediated food
allergy (e.g. - Egg, Gluten, Milk and Soy).

According to John Kernohan, Director of York Nutritional
Laboratories, “We’re very excited over our new strategic alliance with
Diagnos-Techs and our ability to provide the saSCAN Secretory IgA Food
Intolerance Test.  It’s a wonderful compliment to our foodSCAN IgG ELISA
Food Intolerance Finger-Stick Test, which when used in conjunction with
each other, allows physicians and patients alike to have an accurate,
reliable and cost-effective means to screen for both IgA-mediated and IgG
delayed onset allergic reactions.”

When it comes to food allergy, there are typically two kinds:

* Type 1 (Classic, Immediate-Onset, IgE-Mediated): The reaction time
occurs anywhere from seconds to up to 2 hours and typically affects the
skin, airways or the digestive system.  Conventional skin “scratch” tests
are commonly used to detect this type of food allergy.

* Type 3 (Food Intolerance, Delayed-Onset, IgG-Mediated, IgA-Mediated):
The reaction time occurs anywhere from a couple of hours, and up to 2-3
days, after consumption of the food, and any system, tissue or organ in
the body can be affected.  The saSCAN Secretory IgA Food Intolerance Kit,
and the foodSCAN IgG ELISA Food Intolerance Test, screen for this type of
immune reaction.

Background notes...

1). York Nutritional Laboratories came to international attention with its
development of the foodSCAN, which is a simple kit that provides a
convenient method to test for IgG-mediated food allergy.  A tiny “pin-
prick” sample of blood is taken and is then sent to the laboratory for
analysis.  The established Enzyme Linked Immunosorbent Assay (ELISA)
technique is used to identify an individual’s IgG antibody reactions
against 113 different, and commonly eaten, foods.

2). The saSCAN Secretory IgA Food Intolerance Kit is an easy, safe and
accurate way to analyze the antigen specific Secretory IgA in saliva to
detect genetically inherited food intolerances to egg, gluten, milk and
soy protein.  Individuals predisposed to IgA-mediated food intolerance
usually experience intestinal inflammation after consumption of the
offending food(s).  Subsequently, the intestinal mucosa releases Secretory
IgA to neutralize the antigens.  SigA testing allows detection of mild,
sub-clinical, and latent intolerance cases.

3). The foodSCAN IgG ELISA Food Intolerance Test screens 113 foods for IgG-
mediated food allergy and has been validated by multiple independent
studies; including the British Allergy Foundation's 1751 patient study,
which was overseen by the Department of Health Studies at York University,
and a double-blind, placebo-controlled trial performed by the University
Hospital of South Manchester.

4). York Nutritional Laboratories provides finger-stick and saliva tests
for IgG-mediated food intolerance, IgA-mediated food intolerance, Celiac
Disease, Helicobacter Pylori (H.pylori), IgE-mediated food & airborne
allergy, and metabolic analysis.

For more information contact John Kernohan, York Nutritional Laboratories
Inc., 2700 North 29th Avenue, # 205, Hollywood, Florida 33020 USA, (888)
751-3388, [log in to unmask], www.yorkallergyusa.com.

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