The V-PLEX COVID-19 Respiratory Panel 2 (IgG) Kit is a multiplex serology assay that can be used to measure IgG antibodies to 15 important antigens related to SARS-CoV-2, SARS-1, circulating Coronaviruses, and other respiratory diseases. The 15 antigens include: HCoV-229E Spike, Flu A/Hong Kong H3, Flu A/Michigan H1, Flu A/Shanghai H7, Flu B/Brisbane HA, Flu B/Phuket HA, HCoV-HKU1 Spike, HCoV-OC43 Spike, HCoV-NL63 Spike, SARS-CoV-1 Spike, SARS-CoV-2 N, SARS-CoV-2 S1 NTD, SARS-CoV-2 Spike, and RSV Pre-Fusion F.