F2 and COVID-19: Liver injury (elevation of AST, ALT, and bilirubin) was the most often evaluated, but elevations of C-reactive protein, procalcitonin, lactate dehydrogenase, D-dimer, and prothrombin were also verified, as well as a decrease in serum sodium levels, leukocytes, lymphocytes, and monocytes.(8,18,20,24,25,29) Hence, it is very important to evaluate these parameters in patients hospitalized with COVID-19, since they may indicate a worse prognosis of the disease.