Following diagram presents the common group tests in the daily lab routine:
The thromboplastin time (TPT/Quick/PT), the partial thromboplastin time (PTT/aPTT) and the thrombin time (TZ) allow besides the detection of a plasmatic coagulation disorder a classification of the coagulation disorder to the exogenous resp. endogenous clotting direction or to the fibrin formation and thereby to the accordingly detected single factors or the employed test.