title: Heparin assay in plasma: a comparison of five clotting methods.
mesh_terms: D000368:Aged; D001780:Blood Coagulation Tests; D005260:Female; D006493:Heparin / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013917:Thrombin / Q000032:analysis; D013997:Time Factors
chemical_list: D006493:Heparin; D013917:Thrombin