Which of the following could cause an abnormal prothrombin time?
A) vitamin K deficiency
B) liver disease
C) drug therapy
D) decreased levels of von Willebrand's factor.
E) All of these are correct.

Question

Quizplus · Accepted Answer

All of these options can cause an abnormal prothrombin time. Vitamin K deficiency can decrease the production of clotting factors, which leads to an abnormal prothrombin time. Liver disease can impair the liver's ability to produce clotting factors, leading to an abnormal prothrombin time. Drug therapy, such as blood thinners, can also affect clotting factors and lead to an abnormal prothrombin time. Decreased levels of von Willebrand's factor can also affect clotting and lead to an abnormal prothrombin time.

Which of the Following Could Cause an Abnormal Prothrombin Time