CRP and COVID-19: D-dimer is a biomarker of active coagulation and thrombin formation and an increase in D-dimer levels in COVID-19 is helpful to identify pulmonary complications, and risk of thromboembolism.29 C-reactive protein, an acute phase reactant, increases in presence of inflammation and an elevated CRP level is associated with the severe COVID-19 infections.5,30 We also found significantly higher CRP levels in COVID-19 positive diabetic patients (p=0.004) in our study.