In the search for interfering fields as an intervention target in Neuraltherapeutic Medicine (NTM), in addition to carrying out an exhaustive clinical history of life and a thorough physical examination, some paraclinical strategies have been identified, which have allowed therapeutic decisions to be specified. This chapter describes diagnostic imaging strategies and other technologies aimed at identifying variations in temperature, sensitivity, sweating, circulation, skin turgor, and electrical and magnetic changes associated with the action of interfering fields. These strategies have generated precision in the exercise of NTM, and considering their current usefulness and future potential, their implementation and evaluation based on research is recommended.