Visual detection of norovirus genogroup II by reverse transcription loop-mediated isothermal amplification with hydroxynaphthol blue dye.A simple, rapid, specific, and sensitive colorimetric reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay with hydroxynaphthol blue dye (HNB) was established, targeting RNA-dependent RNA polymerase and capsid protein gene for the detection of the dominant norovirus genogroup in China-NoV GII.  The HNB dye-based RT-LAMP could be a novel rapid screening method for prevalent norovirus genogroup II in China, especially in those resource-limited hospitals and rural local clinics.
RT-LAMP
Visual detection of norovirus genogroup II by reverse transcription loop-mediated isothermal amplification with hydroxynaphthol blue dye.A simple, rapid, specific, and sensitive colorimetric reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay with hydroxynaphthol blue dye (HNB) was established, targeting RNA-dependent RNA polymerase and capsid protein gene for the detection of the dominant norovirus genogroup in China-NoV GII.  The HNB dye-based RT-LAMP could be a novel rapid screening method for prevalent norovirus genogroup II in China, especially in those resource-limited hospitals and rural local clinics.
RT-LAMP
The sensitivity of this assay was 10(3) copies per reaction which is equivalent to the conventional RT-PCR test.  The clinical test showed 94.83% coincidence rate for NoV genogroup II detection compared with the results, confirmed by the Department of Viral Diarrhea of Chinese Center for Disease Control and Prevention via conventional RT-PCR. 
RT-PCR