A 12-Year-Old Boy with a History of Bleeding While Flossing

A 12-year-old boy with a history of bleeding while flossing his teeth presents with a nosebleed. He has had recurrent nosebleeds over the past 5 years. His parents deny a family history of bleeding disorders. You suspect von Willebrand disease. A decreased vWF along with what other lab findings confirms the diagnosis?

A) Normal PT & bleeding time, prolonged aPTT
B) Normal aPTT & bleeding time, prolonged PT
C) Prolonged PT & aPTT, normal bleeding time
D) Normal PT & aPTT and prolonged bleeding time