[Interaction between the platelets and the vessel wall. Part 3: Investigation].

Numerous techniques are now suggested for the investigation of interactions between the platelets and the vessel wall. These techniques offer the possibility of precise diagnosis of the majority of haemorrhagic diseases of primary haemostasis. A critical study nevertheless shows that few tests of haemostasis are of use in defining a state predisposing to thrombosis and amongst others, biological study of the vessel remains very limited.