Researchers Develop COVID Test That Uses a Smartphone to Gets Results on the Cheap

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Researchers Develop COVID Test That Uses a Smartphone to Gets Results on the Cheap
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It's a tenth of the price of your average PCR test—and possibly just as accurate.

their saliva samples test positive for COVID-19. When pathogens are present, probes present in the solution bind to it, and fluoresce with a bright red light.

The more pathogens present, the faster the spit-mixture fluoresces, and the faster the app will register it. A person’s viral load is then estimated based on how quickly that bright light began shining.$7 a pop. The only downside is that the app is only compatible with Samsung Galaxy S9 smartphones right now, due to the model’s specific camera calibrations—but more phones

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