If you are having bleeding that is difficult to stop or other symptoms of thrombocytopenia, your physician may order the following tests:
The doctor will review your family history and medical history. He will also ask you about the medicines you take. Your doctor will also check for bruising, rashes (petechiae), and an enlarged spleen or liver.
A complete blood count (CBC) checks the levels of platelets and white and red blood cells.
Blood clot test measures the time it takes for blood to clot. These tests include partial thromboplastin time (PTT) and prothrombin time (PT).