Risk factor (normal range) | Abnormal value, no of patients |
Protein C (69–134%) | 37 |
Antithrombin III (70–112%) | 33 |
Protein S (57–112%) | 11 |
Antiphospholipid antibodies (0–12 U/ml) | 2 |
Homocysteine (5.9–15 μmol/l) | 3 |
MTHFR homozygosis deficiency* | 11 |
Factor V Leiden mutation | 6 |
↵* TT677 substitution of the methylenetetrahydrofolate reductase enzyme.