Fig. 4From: Predictive values of procalcitonin for coinfections in patients with COVID-19: a systematic review and meta-analysisFagan nomogram of PCT for predicting coinfection in patients with COVID-19. The pre-test probability was set to 50%. The post-test probability of PCT for the detection of coinfection was 67% when the PCT was above the cut-off value. The post-test probability was 36% when the PCT was below the cut-off valueBack to article page