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By Jimmy Scott, Ph.D.
As published in Health Freedom News, November 1985

Orthodox allergy testing is not sufficiently accurate to identify all allergies. In my previous article, “You May Have Hidden Allergies” (Health Freedom News, December, 1984), I discussed three of the reasons why allergies may be hidden: (1) the symptoms may be masked to mucus produced by the systems as a response to allergic substances; (2) the symptoms may not be directly observable, as in the case of an early arthritic joint, for example; (3) the symptoms may not be recognized as allergic symptoms — for example, high blood pressure or psychological disturbances. 
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Problems with Traditional Allergy Testing 

When we examine the methods traditionally used to test for allergies, it is easy to understand why they may not be adequate to identify many allergies, particularly those that are hidden for the reasons cited above. 

Medical allergists commonly use a variety of skin tests for food and other allergies. In these tests a very small amount of the suspect substance is introduced into the person's skin through a scratch of a small injection. Muscle Testing For Allergies, Part 1If there is no reaction at the skin test site in a short period of time, the test is considered negative, while if there is a local skin reaction the test is considered positive. A negative test does not necessarily mean that the person is not allergic to the substance; it may be that the test solution was too weak to produce a reaction. 

Skin testing is not very helpful in identifying allergies to foods, which are an important cause of hidden allergies. After all, it is not normal to inject something like milk extract under a person's skin, and it seems reasonable that there would be a reaction. It has been recognized since the 1930s that skin testing for food allergy is not reliable. 
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Clinical ecologists have developed a technique known as sublingual testing, in which a tiny drop of an extract is placed under the individual's tongue. If the test is positive, symptoms may appear very rapidly, including dramatic mental and behavioral reactions. In a matter of moments after the substance is placed under the tongue, the individual’s whole behavior may change — smiling and happy at one moment, and tearful and depressed at the next, as the allergic reaction appears. Unfortunately, sublingual testing may miss many kinds of allergic reactions which are not so readily observable, such as an arthritic joint or uterine fibroids. 
Recently, many nutritionally-oriented health professionals have been using cytotoxic testing to identify allergies. In cytoxic testing, an extract of the substance in question is mixed with a sample of the person's blood,Muscle Testing For Allergies, Part 1 which is then observed under a microscope for changes in the white blood cells. Since foods (and other substances) never actually get into the blood in this manner, it should come as no surprise that such tests may not be very accurate. One commercial laboratory doing cytotoxic testing claims that its tests are “75 percent reproducible.” This is not an adequate guarantee of accuracy, not only because it admits 25 percent error, but also because even the effects that can be reproduced may not be a true indication of allergy. 
I have observed that if cytotoxic testing is done with a food which a person has not been eating recently, an allergy to that food may not show up on the test, even if that person is extremely allergic to that food. Therefore, if you are scheduled to have cytotoxic testing, be sure to expose yourself to as many different foods and other substances as possible during the few days before the test, in order to optimize the results. 
Cytotoxic testing does seem to be a good way of determining whether you are highly allergic in general. If you test positive on only a few substances on cytotoxic testing, you are probably not highly allergic to foods, whereas if you have positive tests for many substances you are probably generally very allergic. 
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