Your doctor will examine you. He or she will feel your thyroid for signs of enlargement or abnormal lumps. He or she also may use a stethoscope to listen for increased blood flow into your thyroid gland.
Your doctor will check for additional signs of hyperthyroidism. These include:
Increased heart rate
Brisk response to tapping with a reflex hammer
If your doctor suspects hyperthyroidism, he or she will order blood tests. These will check your levels of thyroid hormones.
Other diagnostic tests may include:
Blood tests to check levels of certain antibodies
An ultrasound of the thyroid
A thyroid scan