Thrombocytopenia is an abnormal drop in the number of blood cells involved in forming blood clots. These cells are called platelets. The normal amount of platelets is usually between 150,000 and 450,000 cells per microliter of blood. A microliter is an...

Thrombocytopenia (or -paenia, or thrombopenia in short) is the presence of relatively few platelets in blood. Generally speaking a normal platelet count ranges from 150,000 and 450,000 per mm3. These limits, however, are determined by the 2.5th lower...