Diagnosis

The following can be used 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.
• 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 might suggest other tests and procedures to determine the cause of your condition, depending on your signs and symptoms.