L.L.
S.,
I have had hypothyroidism for over 10 years now and any doctor can test your TSH level - you should be aware of the Normal range though. It is between 0.5 and 3.2 or 3.4. I do take the non-generic brand though because the amount of "thyroid hormone" varies in the generic brand and I was recommended by a few people (both medical people and friends) to take Synthroid so the amount was consistent in each dose taken. This is easily controlled by meds, so just keep your Thyroid Stimulating Hormone levels in check and things should be fine! Feel free to contact me or even google TSH levels or Hypothyroidism. There is a ton of information online! Good Luck!
L.