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

Figure 2

Heat maps of positive predictive values (PPVs) of different tests used to predict COVID-19 stratified according to the pretest probabilities and sampling time after the first clinical presentation. The predictive values were colored as follows: 99 and 100% dark blue, 95% to 98% lighter blue, 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.