<unk>  is diagnosed based on clinical findings and requires demonstration of absence or marked reduction of alpha-granules by electron microscopy (EM). High serum vitamin B12 levels are common in patients diagnosed with<unk> . Bone marrow sampling, though not required for diagnosis of<unk> , might be necessary to evaluate myelofibrosis occurring in<unk>  and to exclude other disorders.
Gray platelet syndrome
Harris platelet syndrome
Quebec platelet disorder
Sticky platelet syndrome
Pseudo gray platelet syndrome
Glanzmann's thrombasthenia
COAT platelet defect
Bernard–Soulier syndrome