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Table 1 Comparisons of various parameters between TEG® and ROTEM®

From: Monitoring the coagulation status of trauma patients with viscoelastic devices

TEG ROTEM Interpretation of the finding
R (reaction time) CT (clotting time) Time to initiation of clot formation
A (amplitude) Viscoelasticity of the blood clot. Reflecting the function and counts of platelet and fibrinogen about thrombogenicity of fibrin clot.
K (clot kinetics) CFT (clot formation time) Time from starting of blood clotting to the clot amplitude reaches at 20 mm. Reflecting the speed of clot polymerization.
α α (alpha angle) Rate of increase of clot amplitude. Reflecting the speed of fibrin clot.
MA (maximum amplitude) MCF (maximum clot firmness) Maximum of amplitude. Reflecting the clot strength.
TMA (time to maximum amplitude)   Time to maximum amplitude. Reflecting the clot formation time.
LY LI (lysis index) Rate of decrease of clot amplitude. Reflecting the degree of fibrinolytic activity.
CLT (clot lysis time)   Time from maximum to minimum of clot amplitude. Reflecting the degree of fibrinolysis.
ML (maximum lysis) Maximum rate of decrease of clot amplitude to MCF.