Autonomic Response Testing is a biofeedback assessment tool of the Autonomic Nervous System. The ANS regulates breathing, heart rate, digestion, immune function, sleep patterns, hormone regulation, blood pressure, blood sugar levels, tissue regeneration, and liver and kidney detoxification. Understanding the body stressors structural, biochemical, electromagnetic, psychological – Dr. Dietrich Klinghardt, MD PhD in neurology developed this technique as an aid to determining underlying disturbances in the body as well as being able to formulate remedies to correct that disturbance. Autonomic Response Testing is non-invasive, appropriate for patients of all ages, and may be used in conjunction with other conventional medical tests.