Platelets serve a critical role in coagulation. Functional platelet disorders are rare, occurring in fewer than 1 in 1 million people.
Bernard-Soulier syndrome (BSS) - An inherited disorder in which platelets are deficient in glycoproteins and are unable to bind to blood vessel walls.
Gray Platelet syndrome - The platelets of a person with gray platelet syndrome lack the ability to store proteins in alpha granules.
Delta Storage Pool Disease - Resulting from a disorder of dense granules that slows platelet activation and constriction of blood vessels
Glanzmann thrombasthenia - A disorder characterized by a deficiency of platelets to clump together in a clot.