CRP and pneumonia: Furthermore, a recent meta-analysis has revealed that CRP is a more reliable marker for mortality-AUC = 0.8, along with leukocytosis-AUC = 0.77, and procalcitonin (PCT)-AUC = 0.77 [52], although Nouvenne et al. [53] proved that CRP is a more accurate marker for predicting the diagnosis of pneumonia, while PCT is more specific for bacteremia with identification of bacterial species and differential diagnosis between bacterial vs. nonbacterial infections.