Electrodermal screening (EDS) is a noninvasive diagnostic technique that measures the electrical output of specific points on the hands, face, or feet that correlate to acupuncture meridian points at the beginning or end of energy meridians. The electrical signals given off at these points provide information about the health status of the body’s organs and organ systems, and can also be used to detect the presence of toxins, energy and hormonal imbalances, and harmful microorganisms. In the hands of a highly-skilled EDS practitioner, EDS can often detect many health conditions, even when other sophisticated testing methods fail to do so, because of the fact that both health and disease are first and foremost the result of balanced or imbalanced energy.