Temporal Course of SARS-CoV-2 Antibody Positivity in Patients with COVID-19 following the First Clinical Presentation

Figure 5

NPVs obtained for the combination of the CMIA and LIA for samples with an initial negative test result using an orthogonal test algorithm. NPVs of the test combination are lower than either single test. The predictive values were colored as follows: 90% to 94% white, 80% to 89% light yellow, 70% to 79% medium yellow, 60% to 69% dark yellow, 50% to 59% light red, 30% to 49% middle red, and less than 30% dark red.