Light transmission aggregometry is widely accepted as the gold standard diagnostic tool for assessing platelet function, and a result of absent aggregation with any agonist except ristocetin is highly specific for<unk> . Following is a table comparing its result with other platelet aggregation disorders:
Glanzmann's thrombasthenia
Harris platelet syndrome
Quebec platelet disorder
Gray platelet syndrome
Sticky platelet syndrome
Bernard–Soulier syndrome
Von Willebrand disease
Acquired haemophilia