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How Coronavirus Test Kits Work

How Coronavirus Test Kits Work

022020viruskit20_640x360

 

 

 

Test kits have been one of the main ways to determine if a patient has coronavirus, but results from throat-swab tests can be inaccurate. WSJ visited a lab in Singapore to see how the kits work and find out why there are questions over accuracy. Photo: Crystal Tai

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