Normal Thromboelastogram - Specific parameters represent the 3 phases of the cell-based model of haemostasis: initiation, amplification, and propagation -R value = reaction time (s); time of latency from start of test to initial fibrin formation (amplitude of 2mm); i.e. initiation -K = kinetics (s); time taken to achieve a certain level of clot strength (amplitude of 20mm); i.e. amplification -alpha = angle (slope between R and K); measures the speed at which fibrin build up and cross linking takes place, hence assesses the rate of clot formation; i.e. thrombin burst -TMA = time to maximum amplitude(s) -MA = maximum amplitude (mm); represents the ultimate strength of the fibrin clot; i.e. overall stability of the clot -A30 or LY30 = amplitude at 30 minutes; percentage decrease in amplitude at 30 minutes post-MA and gives measure of degree of fibrinolysis -CLT = clot lysis time (s) #Diagnosis #Hematology #Coagulation #Thromboelastogram #TEG #Normal #Interpretation #Laboratory
