FIGURE 3.
![Receiver operating characteristic (ROC) curves. A, Procalcitonin (PCT) in the differential diagnosis of broadly bacterial infection from viral infections (area under the curve [AUC] = 0.89). B, PCT in the differential diagnosis of bacterial infection from viral and mycoplasma infections (AUC = 0.68). C, Bacterial number (ROC area = 0.95) and PCT (ROC area = 0.68) in the differential diagnosis of bacterial infection from viral and mycoplasma infections. D, Bacterial number (ROC area = 0.94) and PCT (ROC area = 0.62) in the differential diagnosis of bacterial infection from mycoplasma infections.](https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/labmed/55/1/10.1093_labmed_lmad035/1/lmad035_fig3.jpeg?Expires=1749307534&Signature=LB7~aiA-WrQSNCapauEajIZCErQEwQHpcfCeiedstW~cZHBKf7vTye8VtLtAyQtsphtNxPjvIP7HFwLiR8s~470LQ7GL3nu6MN--Xu6bP7lRScJjfJEe39e0KxQpt295j0aupmSxCgHfCStDuO2WtJXyVZIWui0VWs-hvlGZAqQHQwCU3Vqan2tg-BiVlN9hJqfpuyRov-v7M-pVGgG5yFYojJRjOmERDWNDHhLtQVLWPoD7NckVUV1dtZrXjm53TjejFYKKYmaBaAsIsHV~eX0JT~XoWfVC4tPzM4CZgzCBSKnkgjr-xgHZRl8cUagmesubO3sSlLrporBZbR5GEA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Receiver operating characteristic (ROC) curves. A, Procalcitonin (PCT) in the differential diagnosis of broadly bacterial infection from viral infections (area under the curve [AUC] = 0.89). B, PCT in the differential diagnosis of bacterial infection from viral and mycoplasma infections (AUC = 0.68). C, Bacterial number (ROC area = 0.95) and PCT (ROC area = 0.68) in the differential diagnosis of bacterial infection from viral and mycoplasma infections. D, Bacterial number (ROC area = 0.94) and PCT (ROC area = 0.62) in the differential diagnosis of bacterial infection from mycoplasma infections.
