PROS1 and COVID-19: However, other authors have found that both severe and mild COVID‐19 patients show similar levels of endogenous anticoagulants and similar anti‐thrombin, protein C, protein S, α2‐antiplasmin and plasminogen activator inhibitor‐1 (PAI‐1) activities [2], suggesting that we need new diagnostic criteria since the COVID‐19 coagulopathy is different to the usual forms of disseminated intravascular coagulopathy [3].