A patient has prolonged PT and APTT. Which of the following tests would not be warranted to follow up these findings?
A) Factor XIII assay
B) D-dimer
C) Liver function tests
D) Fibrinogen

Question

Quizplus · Accepted Answer

Factor XIII is not directly involved in the coagulation pathway and therefore is not typically measured in the workup of prolonged PT and APTT. The other tests listed (D-dimer, liver function tests, fibrinogen) are routinely ordered in the workup of coagulation disorders.

A Patient Has Prolonged PT and APTT