Clinical condition | Findings |
---|---|
Antiphospholipid antibody syndrome | Negative lupus anticoagulant |
Negative anti-cardiolipin IgG antibody | |
Negative anti-cardiolipin and anti-β2-glycoprotein I antibody | |
Decrease in anticoagulant factors | Normal activities of proteins C and S |
Normal level of antithrombin III | |
COVID-19 infection | Negative PCR test for SARS-CoV-2 |
Heparin-induced thrombocytopenia | Negative heparin-induced thrombocytopenia antibody |
Others | Normal activity of factor VIII |
No prolonged immobility | |
No findings of malignancies |