The research group Electroanalysis and (Bio)Electrochemical sensors (GEBE) is a consolidated group of the Universidad Complutense of Madrid, established in 1988 and whose research covers all branches of Analytical Electrochemistry, with special emphasis on the design and development of electrochemical sensors and biosensors focused on the detection of clinical markers and their relation with nanobiotechnology and nanoscience, as well as with the areas of food safety and quality. The current interests of the group are focused on the use of these nanomaterials for the manufacture of specific sensors. Thus, its current research lines are based on the use of the most modern electrochemical techniques and cutting edge materials, among which nanomaterials such as graphene, single, double and multiple carbon wall nanotubes, carbon nanohorns, carbon and metallic nanoparticles, featuring gold anoparticles, as well as different types of redox polymers and electronic conductors, can be highlighted. On the other hand, in the field of applications to real samples, the design and use of sensors in clinical, environmental and food analysis is investigated. In this sense, GEBE meets the demands of society by developing simple, low cost, and fast analytical methodologies, also affordable for non-specialized personnel and easily automatizable and miniaturizable for implementation in devices that allow the decentralized determination of analytes of clinical, food and environmental relevance. Specifically in the clinical field, GEBE has applied nanoscience in the implementation of immunosensors and genosensors for the determination of various protein and genetic biomarkers of relevance for diagnosis/prognosis of cardiovascular diseases, cancer prognosis and diagnosis, neurodegenerative and autoimmune deseases.