title: When should blood samples be obtained for an appropriate estimation?
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Shukunami
authors.forename: Koji
authors.initials: K
authors.lastname: Nishijima
authors.forename: Fumikazu
authors.initials: F
authors.lastname: Kotsuji
mesh_terms: D005260:Female; D006403:Hematologic Tests; D006801:Humans; D011486:Protein C; D011655:Pulmonary Embolism / Q000097:blood / Q000175:diagnosis*; D013917:Thrombin; D020246:Venous Thrombosis / Q000097:blood / Q000175:diagnosis*
chemical_list: D011486:Protein C; D013917:Thrombin