I understand you are not on any thyroid medication right now, neither levothyroxine
Yes you are correct you do have subclinical hyperthyroidism
, provided your free t3 and free t4 are within normal limits. Each lab tends to have different ranges and units for free t3 and free t4, so it would be helpful if you shared the normal ranges on your lab report with me.
To explicate the matter further, I would like you to know that the term subclinical in this instance is a kind of a misnomer. The medical jargon has perisisted over decades and should be reserved for individuals who have lab numbers similar to yours but with no symptoms. The fact that you have symptoms that can very well be due to the over active thyroid makes the term 'sub - clinical' inapplicable to you.
The next question is whether you were under any major stress/illness at the time of the thyroid blood tests, because that can lower the TSH too. Similarly, steroids
pain killers have a similar impact on the thyroid function tests
. But I see these are not listed in your medications.
So after eliminating confounders like the ones alluded to above, the next step I perform when I see an individual like you in my clinic, is to order a Radio active Iodine
123 Thyroid uptake and Scan test. This helps decipher whether your Graves is back or if it is a different cause this time, such as a temporary condition called 'Thyroiditis' which tends to get better by itself without any treatment.
I also prefer to have the following labs on file for people who come to me with this problem:
Complete blood count
And if your menstrual cycles have stopped, then the following tests are also helpful in ruling out a rare condition called Secondary hypothyroidism