MCQ – 42783

The deficiency of all of the following factors increases the incidence of thrombus formation except ‑

A.	Lipoprotein A
B.	Protein – C
C.	Anti – thrombin III
D.	Protein – S

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Correct Answer � A Explanation

Ans. is ‘a’ i.e., Lipoprotein A 

Risk Factors for Hypercoagulable States/Thrombosis

• Defective inhibition of coagulation factors:
₋₋ Factor V Leiden (resistant to inhibition by activated protein C)
₋₋ Antithrombin III deficiency
₋₋ Protein C or S deficiency
₋₋ Prothrombin gene mutation (G20210A)