Which of the following coagulation factors is a transglutaminase that cross-links fibrin molecules to stabilize the blood clot?

A Factor XIII ✓
B Factor XII
C Factor XI
D Factor X

Explanation

Factor XIII, also known as fibrin stabilizing factor, is a transglutaminase that cross-links fibrin molecules to stabilize the blood clot.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Hard MEDICAL Confidence: high