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Table 4 Comparison of test results and return results of inter-laboratory quality assessment panel

From: Analysis and validation of a highly sensitive one-step nested quantitative real-time polymerase chain reaction assay for specific detection of severe acute respiratory syndrome coronavirus 2

Sample ID Test results Return results
qRT-PCR (Ct value) OSN-qRT-PCR (Ct value) ddPCR (copies/mL) SARS-COV-2 Pass rate (%)
ORF-1ab N ORF-1ab N ORF-1ab N
202001 Negative 99
202002 31.79 30.49 16.45 20.97 3074 2073 Positive 98
202003 25.99 24.23 13.78 18.68 23,080 5005 Positive 99
202004 33.87 32.31 20.94 21.19/26.67 1144 2860 Positive 98
202005 29.93 28.87 15.56 19.53 7293 2072 Positive 99
202006 Negative 99
202007 32.85 31.73 18.38 20.80 1144 1573 Positive 98
202008 Negative 99
202009 34.85 33.91 18.92 22.43 1312 643 Positive 97
202010 27.79 26.40 12.22 15.89 33,962 11,072 Positive 99
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