NATtrol™ SARS-CoV-2 Variant B.1.1.7 stock is designed to evaluated the performance of nucleic acid tests for determination of the presence of SARS-CoV-2 Variant B.1.1.7 RNA. NATtrol™ SARS-CoV-2 Variant B.1.1.7 stock enables laboratories to monitor test variation, lot-to-lot test kit performance, operation variation, and can provide assistance in identifying random or systematic error.