While a large number of studies demonstrate the role of various biomarkers, including D-dimer, C-reactive protein, platelet count or hemorheologic indices for prediction of death, clinical deterioration or thrombotic events in COVID-19 patients, the data published so far do not sufficiently differentiate biomarkers associated with increased risk for arterial thrombosis from those associated with a higher risk of venous thrombosis. Here, CRP is linked to COVID-19.