Thrombocytopenia is a medical condition characterized by a low platelet count in the blood. Platelets, also known as thrombocytes, are small, disc-shaped cell fragments that play a crucial role in hemostasis by helping blood to clot and stopping bleeding. A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. Thrombocytopenia is typically defined as having less than 150,000 platelets per microliter.
