COVID-19 RT-PCR testing: Beware of false negatives, researchers caution

One of the most commonly used diagnostic tools, particularly during this pandemic, is the reverse transcriptase polymerase chain reaction test (RT-PCR), which uses a person's respiratory sample to detect viral particles and determine if the person may have been exposed to a virus. Laboratory professionals across the U.S. and the globe have used RT-PCR to [...]

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