This is the response I got back from my Endo when I asked for Optimal vitamins be tested and that I wanted my T3 and T4 tested and see about getting them up in the higher range!
Your March 8, 2021 TSH is perfect at 1.56. Targeting TSH levels in a very tight range of 0.5-1.0 is not part of routine care, because of a very narrow therapeutic window of levothyroxine which often causes us to overshoot the target and make people hyperthyroid.
I am not sure if we have discussed this in the past or not but T4 and T3 levels do not add much information clinically, despite what you have read on the Internet. I will order them though if you want. I have also entered an order for 25-hydroxy vitamin D as vitamin D deficiency is fairly prevalent in Western Pennsylvania.
I am not sure why you are interested in ferritin, folate, vitamin B12. Typically these labs are checked in the setting of anemia, I would recommend touching base with your PCP regarding these.