Which of These is Used Clinically to Impede or Prevent

Question

Which of these is used clinically to impede or prevent blood clotting?
A) thrombin
B) heparin
C) fibrin
D) tissue factor
E) prothrombin

Accepted Answer

Heparin is a medication that is clinically used to impede or prevent blood clotting. Thrombin, fibrin, tissue factor, and prothrombin are all involved in the process of blood clotting, but they are not used to impede or prevent it.