F2 and blood coagulation disease: The most typical finding in patients with COVID-19 and coagulopathy is an increased D-dimer concentration, a relatively modest decrease in the platelet count, and a prolongation of the prothrombin time; the combination of thrombocytopenia, prolonged prothrombin time, and increased D-dimer level is suggestive of DIC [17], which was evident in our cases.