COVID-19 diagnostics for resource-limited settings: Evaluation of unextracted qRT-PCR
Detection Principle
NucleicAcid-PCR based
Target
N1, N2, N3 (CDC) and RNaseP
Testing Method Category
RT-PCR
Testing Method
US CDC
Testing Method - Additional Info
the approach replaces RNA extraction/purification with a heat?inactivation step of viral transport media (VTM), followed by direct inoculationminto PCR master mixes.
Reported Performance
PPA (non extraction vs extraction): 95% (N1, unconcentrated samples), 95% (N3, unconcentrated samples), 100% (RP, unconcentrated samples), 32.5% (N2, unconcentrated samples), 95% (N1, concentrated samples), 100% (N3, concentrated samples), 100% (RP, concentrated samples), 85.4% (N2, concentrated samples); NPA: 95% (N1, unconcentrated samples), 97% (N3, unconcentrated samples), 100% (N2, unconcentrated samples), 97% (N1, concentrated samples), 95% (N3, concentrated samples), 100% (N2, concentrated samples)
Sample Size
41 samples
Peer-reviewed
yes
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