CRP and COVID-19: Furthermore, both the prognostic value with regard to 30-day all-cause mortality of CRP (AUC = 0.467; 95% CI 0.311—0.402; p = 0.311) and PCT (AUC = 0.455; 95% CI 0.382–0.528; p = 0.221) was poor and comparable to the AUCs including COVID-19 patients (p > 0.05) (data not shown).