UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 0889
Question:
A patient with long standing renal insufficiency develops mild generalised ecchymoses. Platelet dysfunction is suspected despite a normal platelet count. Which test would be most useful in this patient?

a) bone marrow aspirate
b) Clot retraction
c) Tourniquet test
d) Bleeding time
e) Prothrombin time (PT)