Ranges are T4 total 6.1-12.2
T3 total 0.9-1.8
TSH 0.34-5.60
Free T3 0.61-1.21
The total's are outdated and a waste of money for you if you have to pay for your tests. The most important are the free t4 and free t3 with the tsh.
If you are having symptoms then I would also suggest tests for Graves and Hashimoto's autoimmune diseases. These are disorders that affect your thyroid and can produce symptoms long before thyroid test levels will show sometimes.
Post the Lab Ranges here as Australia is different from other countries.
Then others can help you too.
With a TSH of 1.56, it comes within the Normal reference range but may NOT be normal for you.
If my TSH is lower than 2.0 , I feel like ****.
My best range is around the 2.3 mark...even though most say it should be around 1.0 - 2.0