HOW IS ELISA/ACT LRA TESTING DIFFERENT FROM RAST TESTS?
RAST (IgE) only detects immediate allergic reactions to about 100 dietary or environmental substances. This test is useful to assess hives, wheezing, or shock that may appear minutes after being exposed to a reacting food or chemical. The ELISA/ACT LRA are comprehensive and reliable tests able to identify the causes of delayed allergy/hypersensitivity reactions. These can occur from hours to weeks after exposure. This is the only test that can evaluate all three delayed hypersensitivity pathways, including Antibodies, Immune Complex and Cell Activation. Because the ELISA/ACT LRA is functional, it allows EAB to screen out protective antibodies, such as IgG, which identify only those reactive and provoking items. Most people do not realize they are reacting to these substances since the onset of symptoms does not occur quickly. For example, people may develop- achiness hours to days after a food or chemical exposures. ELISA/ACT LRA measures sensitivities to as many as 400 times from the
