Negative antigen RDT and RT-PCR results do not rule out COVID-19 if clinical suspicion is strong - Authors' reply. Friday 28 May 2021 Mandeng N Fai KN Bebell LM Boum Y The Lancet. Infectious diseases 2021 May 28; . doi: 10.1016/S1473-3099(21)00288-7. Epub 2021 05 28 Link to journal page