Tests and diagnosis

By Mayo Clinic Staff

Your doctor may use the following tests and procedures to determine whether you have thrombocytopenia:

  • Blood test. A complete blood count determines the number of blood cells, including platelets, in a sample of your blood. In adults, normal platelet count is 150,000 to 450,000 platelets per microliter of blood. If the complete blood count finds you have fewer than 150,000 platelets, you have thrombocytopenia.
  • Physical exam, including a complete medical history. Your doctor will look for signs of bleeding under your skin and feel your abdomen to see if your spleen is enlarged. He or she will also ask you about illnesses you've had and the types of medications and supplements you've recently taken.

Your doctor may suggest that you undergo other tests and procedures to determine the cause of your condition, depending on your signs and symptoms.

March 31, 2015