The estimation of prothrombin level is useful in the following clotting factor deficiency , except
Correct Answer: 9
Description: ref Robbins 8/e p119;7/e p128;9/e p119 The PT test evaluates how well all of the coagulation factors in the extrinsic and common pathways of the coagulation cascade work together. Included are: factors I (Fibrinogen), II (Prothrombin), V, VII and X. The PT/INR may be done at the same time as a PTT, which evaluates the clotting factors that are pa of the intrinsic and common pathways: XII, XI, IX, VIII, X, V, II (prothrombin), and I (fibrinogen) as well as prekallikrein (PK) and high molecular weight kininogen (HK).
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