**5.7 Measurement of the degradation products of plasma fibrin and fibrinogen**

Plasma fibrin degradation product level (FDP) of **12.6 μg/mL or higher** is suggestive of the possibility of aortic dissection with false lumen in symptomatic patient.

Plasma fibrin degradation product level (FDP) of 5.6 μg/mL or higher is suggestive of the possibility of dissection with complete thrombosis of the false lumen [21].
