The<unk>  <unk>  and its derived measures of<unk>  ratio (PR) and international normalized ratio <unk>  are measures of the extrinsic pathway of coagulation. They are used to determine the clotting tendency of blood, in the measure of warfarin dosage, liver damage and vitamin K status. The reference range for<unk>  is usually around 12-15 seconds; the normal range for the<unk>  is 0.8-1.2.<unk>  measures factors II, V, VII, X and fibrinogen. It is used in conjunction with the activated partial thromboplastin time (aPTT) which measures the intrinsic pathway.
Prothrombin time
Activated clotting time
Partial thromboplastin time
Fibrin degradation product
Bleeding time
Lupus anticoagulant
FibroTest
DAPT score