Table 1: Modifications of haemostatic factors during pregnancy.

Procoagulant factors
 Fibrinogen (factor I)
 von Willebrand factor
 Factors VII, VIII, IX, X, XII
 Factors V, XIII
 Factor XIC
 Factor IIC
Coagulation inhibitors
 Protein S
 Protein C, antithrombin III=
Fibrinolytic factors
 Tissue plasminogen activator
 Plasminogen activator inhibitor 1 and 2 (PAI-1, PAI-2)
 Thrombin activatable fibrinolysis inhibitor (TAFI)
Others
 Platelet count
 Prothrombin fragment 1+2
 Thrombin-antithrombin complex
 D-dimer, fibrinopeptide-A

: increase; : decrease; =: no significant change; : early increase followed by decrease; C: controversial data.