Baseline procalcitonin as a predictor of bacterial infection and clinical outcomes in COVID-19: A case-control study.

Following corrections, PCT remained a highly significant predictor for secondary bacterial infection, positive blood (OR = 1.62, CI [1.15, 2.28], p = 5.8E-03) and sputum cultures (OR = 1.44, CI [1.10–1.89], p = 8.7E-03), as well as for ventilation (OR = 1.47, CI [1.22–1.77], p = 0.000039), death (OR = 1.39, CI [1.15–1.69], p = 0.00077), and ICU admission (OR = 1.48 CI [1.23–1.78], p = 0.000036) by day 28.

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In our cohort, we see a positive trend when correlating increasing creatinine with PCT although a rise in PCT remains noted in the setting of true infection.

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