SARS-CoV-2(129) COVID-19(100) acute respiratory syndrome(50) detect(49) Protein(48) sensitivity(47) coronavirus(46) Diagnosis(45) acute respiratory syndrome coronavirus(40) severe acute respiratory syndrome Coronavirus(40) Concentration(38) limit of detection(36) platform(34) acute respiratory syndrome coronavirus 2(32) demonstrated(32) point-of-care(32) isothermal amplification(32) COVID-19 pandemic(30) amplification(28) nucleic acid(28) Analysis(27) isothermal(27) SARS-CoV-2.(27) antibody(26) Saliva(26) virus(25) diagnostics(25) respiratory(24) clinical samples(24) Spike protein(23)