How is the corona virus detected using RT-PCR(reverse transcriptase polymerase chain reaction)?

Different countries used different protocol for RT-PCR diagnostic testing for SARS CoV-2. Some countries target the N region gene of SARS CoV-2. This is because , among other reasons, it is a highly conserved region in coronaviruses genome and to deliver consistent result. so basically we need to target specific gene and perform RT-PCR test

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