Presepsin as a predictive biomarker of severity in COVID-19: a case series

Guidelines for the diagnosis and treatment of the novel coronavirus disease 2019 (COVID-19) present clear criteria, including respiratory rate, hemoglobin oxygen saturation (SaO2), and oxygenation indicator (PaO2/FiO2)1. However, these criteria are susceptible to subjective and objective interpretation, which may lead to an extended delay in diagnosis and the possibility of misdiagnosis in severe COVID-19.