Nutrition Response Testing. This technology utilizes something called muscle testing. A person, called an indirect tester, is a conduit to the patient’s nervous system. The doctor uses the indirect tester’s muscle strength to find issues in the pet’s body, and discover ways to correct them. It determines which nutritional products, homeopathic products and herbs that might get the body to heal itself. At times, it can actually detect when organs in the patient’s body are not working optimally before any changes in laboratory values have occurred! It gives us options to help pets when other things might not. The testing is noninvasive and painless as long as your pet doesn’t mind being touched. There are no contraindications. It is a long-term system, testing pets over several months to years to monitor the healing and when the body no longer wants certain products in the treatment plan.