What Happens During A COVID-19 Test
A laboratory technician with the Home Team Science and Technology Agency (HTX) simulates the loading of primer onto a VereChip Lab-on-Chip, part of the Covid-19 test kits at the CBRNE Laboratory in Singapore. (Photographer: Wei Leng Tay/Bloomberg)

What Happens During A COVID-19 Test

A test for Covid-19 uses a ‘reverse transcription polymerase chain reaction’ (RT-PCR). The RNA in the sample is extracted and converted to DNA, which is then amplified using 'primers' - short, synt...
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