Sars cov 2 rna meaning July 8, 2019 16 32 64 128 Sars cov 2 rna detected meaning Sars cov 2 rna not detected meaning Sars cov 2 rna rt pcr detected meaning Sars cov 2 viral rna detected meaning Sars cov 2 rna covid 19 detected meaning Sars cov 2 rna covid 19 qualitative naat meaning Rna specific to sars cov 2 detected meaning in hindi Sars 2 rna