CRP and COVID-19: In a study where the levels of C-reactive protein in COVID-19 patients were evaluated and categorized in four stages according to the computed tomography (CT) findings: initial (3 days), progression (7 days), peak (12 days) and recovery (16 days), the results of the seriously ill group (n=6) presented higher levels of CRP in the progression stage than the milder group (n=21), but decreased without statistically significant differences in the peak and recovery stages [36].