The first sample was collected on a tube contained
0.11 M sodium citrate anticoagulant (1:9, v:v), and used for
plasma preparation for screening of the following blood
coagulation tests: prothrombin time (PT), activated partial
thromboplastin time (APTT), and fibrinogen (FIB) concentra-
tions, by using Dade® Behring reagents and following
manufacturer's instructions as previously described