HONG KONG SAR – Media OutReach – 26 May 2022 – As the outbreak of the COVID-19 pandemic has continued for over two years, a fast and accurate antibody detection method can help assess the antibody content of the human body, as well as provide reference data for healthcare departments to formulate appropriate vaccination measures. In the long run, the antibody content data can also contribute to epidemiological studies and vaccine development. In view of this, a research team from the Department of Applied Physics of The Hong Kong Polytechnic University (PolyU) has successfully developed an ultrasensitive and portable COVID-19 antibody detection sensor based on organic electrochemical transistor (OECT) technology. Fast and easy-to-use, the sensor is designed for testing the antibody levels of people who have either received vaccination or have been infected with the virus.