Laboratory findings that are hallmarks of Glanzmann's thrombasthenia include all but which of the following?

Question

Quizplus · Accepted Answer

The hallmarks of Glanzmann's thrombasthenia include a normal platelet count (A), prolonged bleeding time (B), absence of aggregation to ADP (D), and absence of aggregation to collagen (E), but the presence of clot retraction (C) is not consistent with this disorder. In Glanzmann's thrombasthenia there is a deficiency in the glycoprotein IIb/IIIa receptor on the surface of platelets, which is responsible for platelet aggregation and clot formation. Without this receptor, platelets cannot form stable clots and there is no clot retraction.

Laboratory Findings That Are Hallmarks of Glanzmann's Thrombasthenia Include All