Hypothyroidism is a common condition, which affects the thyroid gland. Appropriate diagnosis of hypothyroidism depends on:
Medical history and physical examination: These form the first step in diagnosing hypothyroidism. Your doctor will ask you questions regarding changes in your health and your symptoms. Some other questions that your doctor may ask are:
During physical exam, the doctor will check your thyroid gland, look for changes in skin such as dry skin, swelling of legs, slower reflexes and a slower heart rate. If findings of physical examination or signs and symptoms suggest that you have hypothyroidism or subclinical hypothyroidism, your doctor will do tests to confirm the diagnosis.
Laboratory tests: The two blood tests that are used to diagnose hypothyroidism are TSH (thyroid-stimulating hormone) test and T4 tests.