Severe infections caused by Coronavirus Disease 2019 (COVID-19) are characterized by high rates of hospitalization, intensive care, and mortality, especially in critically ill patients. The increase in the number of cases has created a serious burden on healthcare systems due to supply-demand imbalances in essential medical supplies and has caused disruptions in service delivery. It is known that the relationship between the clinical severity of COVID-19 and the risk of mortality is strong. Therefore, early identification of cases at risk of progression to severe forms of the disease is critical to improving prognosis.

In this context, laboratory markers and radiological findings that reflect the severity of the disease and are associated with mortality are becoming increasingly important in clinical management. It will be possible to determine the severity of the disease with cheap, practical, easy-to-use laboratory parameters and radiological findings. In this way, it will contribute to the follow-up treatment of patients and the correct use of health resources.