This fact is from Bleeding Disorders in General Medicine. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Hemophilia A = Factor VIII deficiency = most common hemophilia
Hemophilia B = Factor IX deficiency = Christmas disease
Von Willebrand disease = most common inherited bleeding disorder overall
PT = prothrombin time = extrinsic pathway = warfarin monitoring
INR = international normalized ratio = standardized PT.