What is thromboelastography (TEG)?

Updated: Apr 16, 2019
  • Author: Linda L Maerz, MD, FACS, FCCM; Chief Editor: Emmanuel C Besa, MD  more...
  • Print
Answer

Answer

First described by Hartert in 1948, thromboelastography records viscoelastic changes that occur during coagulation. A small volume of whole blood or plasma is placed into a mortar style cup, and a pestle is then inserted. The pestle rotates back and forth on a torsion wire that is attached to a monitoring device. As a clot forms, the pestle rotation is progressively retarded creating increased torsion on the torsion wire and a deflection on the tracing. The fibrin polymerization process is graphically depicted, including the rate of fibrin polymerization as well as overall clot strength and retraction.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!