My medical records from the past show that I had low tsh. When I was young, the doctor told my parents to bring me to an endocrinologist but they never did. I have had my thyroid checked once a year for the last 3 years. I was told it was normal. If the tsh shows normal, is that a solid test you can rely on? I have heard that other tests can be performed in regards to T3 or T4. Is it necessary to perform these other tests if the person's tsh shows normal?
No one single laboratory test is 100% accurate in diagnosing all types of thyroid disease; however, a combination of two or more tests can usually detect even the slightest abnormality of thyroid function. So, it'll be good to be checked for T3 and T4 hormone levels.
For example, you can have not elevated TSH levels, but low T4 hormone level.
Do you have some symptoms?