Design and Development of a Fully Wireless Board Enabling Multiple Electrochemical Sensors Operation and Readout for Salivary Diagnostics Applications

The increasing interest surrounding point of care diagnostics and the rapid development of portable devices has shifted screening and monitoring of pathologies from dedicated lab spaces to personal homes and clinical offices. Among different biofluids to be analyzed, saliva has emerged as one of the most promising medium, due to the non-invasiveness of its collection and its richness in biomarkers. To satisfy a plethora of emerging needs in the field of salivary diagnostics, dedicated devices need to be built that meet stringent performance requirements while also optimizing for versatility and user friendliness. In this regard, we describe here the development of a customized portable electronic board, capable of performing different electrochemical measurements, including open circuit potentiometry, chronoamperometry and cyclic voltammetry in the context of a salivary diagnostic application. The device is also wirelessly powered to allow for on field deployment and the data gathered via the analysis is sent to a mobile device for further processing and display to users.