IIT-D creates handheld device for detection of dengue & HIV 15 April 2021 | News The handheld device has been successfully tested on clinical blood samples The GLancing Angle Deposition (GLAD) research group at IIT Delhi’s Physics Department has developed a handheld Surface Enhanced Raman Spectroscopy (SERS) based platform for early diagnosis of dengue virus. It also gives dengue test results within one hour (rapid diagnosis). The handheld device has been successfully tested on the clinical blood samples collected from hundreds of individuals in collaboration with ICMR-National Institute of Malaria Research (NIMR), New Delhi. The intergrated device was able to clearly differentiate the three sets of blood samples; dengue positive, negative and healthy. This method provides a sensitive, rapid, and field deployable diagnosis of dengue at the early stage.