What is the definition or description of: blood platelet count?

Blood clotting cell: Platelets are blood cells that assist in forming clots. They are produced by megakaryocytes in the bone marrow they adhere to one another in the face of trauma to form a seal. A normal platelet count is about 200, 000 to 400, 000 platelets per microliter.

Thrombocytes: Platelets, or thrombocytes are small, irregularly shaped clear cell fragments which are derived from fragmentation of precursor megakaryocytes. The average lifespan of a platelet is normally just 5 to 9 days. They circulate in the blood and are involved in hemostasis, leading to the formation of blood clots. Platelet count is the number of platelets in blood.