Quantitative assay of the Hageman factor.
D001778:Blood Coagulation Disorders / Q000097:blood; D001780:Blood Coagulation Tests; D005174:Factor XII / Q000032:analysis*; D006801:Humans; D011517:Prothrombin Time; D013925:Thromboplastin / Q000494:pharmacology
D005174:Factor XII; D013925:Thromboplastin