MARK-B™ COVID-19
MARK-B™ platform
neurogear®
elemark®
Frozen Nasopharyngeal Swab
The clinical performance of MARK-B™ COVID-19 Ag was evaluated with frozen nasopharyngeal swab specimens, which have been collected from multiple sites in the United States between September 2020 and April 2021, against a commercial RT-PCR molecular assay as a reference method. To be enrolled in the study, patients had to be presenting at the sites with COVID-19 like symptoms within 8 days of symptom onset. the RT-PCR assay and a total of 207 samples including 72 positive and 135 negative specimens were selected for the study. MARK-B™ COVID-19 Ag test was performed by minimally trained operators who are representative of the intended users. The clinical performance of MARK-B™ COVID-19 Ag was concluded as a sensitivity of 93% (67/72) and a specificity of 100% (135/135).