thereby reversing the effects of citrate and enabling the blood to clot again.
* Finally, in order to activate the extrinsic / tissue factor clotting cascade pathway, tissue factor (also known as factor III) is added and the time the sample takes to clot is measured optically. Some laboratories use a mechanical measurement, which eliminates interferences from lipemic and icteric samples.

Prothrombin time ratio

The prothrombin

1.Previous
3.Next