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Light-based device uses a few drops of saliva to effectively test COVID-19 patients

February 22, 2022

A team of researchers from ICFO and IrsiCaixa report on the development of a low-cost, portable, non-invasive device that uses light and saliva to test Covid-19 patients in less than 30 minutes. The results have shown that the device can detect very low concentrations of SARS-CoV-2 with a sensitivity of 91.2% and a specificity of 90%, similar to that of PCR but as fast as an antigen test.

The breakout of Covid-19 became a game changer in the medical field in 2020. Studies bloomed and steered into full motion to try and find solutions via different paths; on one hand, vaccinations to control the spread of the disease, and on the other hand, seeking for testing techniques that could be available and accessible to everyone around the globe.

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