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Thrombelastographic (TEG) variables: reaction time (r; normal range 19-28 mm) is related to the rate of initial fibrin formation. k (range 8-13 mm) is clot formation time. Maximum amplitude (MA; range 48-60 mm) represents the strength of the clot. Alpha angle (α; range 29-43°) represents the rate of clot formation. A60 is a measure of clot retraction or lysis.
