<unk>  is affected by platelet function, certain vascular disorders and von Willebrand Disease—not by other coagulation factors such as haemophilia. Diseases that cause prolonged<unk>  include thrombocytopenia, disseminated intravascular coagulation (DIC), Bernard-Soulier disease, and Glanzmann's thrombasthenia. Aspirin and other cyclooxygenase inhibitors can significantly prolong<unk> . While warfarin and heparin have their major effects on coagulation factors, an increased<unk>  is sometimes seen with use of these medications as well. People with von Willebrand disease usually experience increased<unk> , as von Willebrand factor is a platelet adhesion protein, but this is not considered an effective diagnostic test for this condition. It is also prolonged in hypofibrinogenemia.
Bleeding time
Clotting time
Thrombin time
Coagulation activation marker
Activated clotting time
Prothrombin time
Kaolin clotting time
Partial thromboplastin time