Thrombin Generation Assays: What are the Current Clinical Applications?

Area of Science:

• Hematology
• Biochemistry
• Clinical Chemistry

Background:

• The thrombin generation assay (TGA) was developed to measure the dynamic process of clot formation.
• Originally devised by McFarlane and Biggs, it was refined by Hemker and colleagues.
• TGA assesses thrombin's continuous generation upon plasma coagulation activation.

Purpose of the Study:

• To provide an overview of the current procedures for TGA.
• To evaluate the value and limitations of TGA in hemostasis investigation.
• To discuss TGA's application in understanding coagulation mechanisms.

Main Methods:

• Review of current literature on TGA applications.
• Analysis of TGA's sensitivity to various triggers (tissue factor, phospholipids, calcium chloride).
• Assessment of TGA's response to prohemostatic and antithrombotic drugs.

Main Results:

• TGA is sensitive to both hypo- and hypercoagulability.
• The assay is influenced by medications affecting hemostasis.
• Literature indicates TGA is primarily used for investigating coagulation disorders.

Conclusions:

• TGA is a valuable tool for studying hemostasis and coagulation mechanisms.
• Understanding TGA's limitations is crucial for accurate interpretation.
• Further research can refine TGA protocols for broader clinical application.