About: Platelet counts are done to know the number of platelets circulating in the blood of a person. Platelet count is a part of complete blood picture. Platelets are also known as thrombocytes and are fragments of cells and play a major role in the stoppage of bleeding. The normal range varies between 2 lakhs and 4 lakhs. The platelet count test is not done especially but in the same way as that of the blood test done for the count of any other blood cells. Platelet count is usually performed along with platelet function test as it helps to know both the number and functioning of the platelets at once.