An unconventional device called the Vega-test machine is promoted by some alternative medicine practitioners for diagnosing illnesses and determining appropriate treatments. Other names for this approach include electrodermal testing (EDT) and electroacupuncture according to Voll (EAV). The method, which has many variations, generally involves measuring the body's electrical resistance at acupuncture points. Possible allergens or toxins, or prospective treatments, are placed within a device called a honeycomb that is said to test the effects of that substance on the body. More recent devices use a computer that supposedly simulates the presence of test substances.
There is no obvious commonly accepted scientific basis for the use of this method. To the limited extent that it has been tested, it has not proven itself a valid diagnostic technique.
What Is the Scientific Evidence for the Vega Test?
On the basis of this information, the only fair assessment at present is that the Vega test has not been shown to be a meaningful method of identifying allergies to dust mites or cat dander. Proponents of the Vega device and other EDT techniques object that identifying respiratory allergens is not the device's primary use. However, at present there is no reliable evidence that the method has validity for any use.
- Reviewer: EBSCO CAM Review Board
- Review Date: 07/2012 -
- Update Date: 07/25/2012 -