Thyroid Goiter

I have an enlarged thyroid (goiters) both sides are enlarged meaning entire thyroid enlarged.  Blood test show that I do not have hypo or hyper thyroidism but my TSH were low, borderline, but now below what is needed.  I see a thyroid specialist who has put me on 75mcg of synthroid per day.  

My question, won't this make my TSH lower?  Making me become hypo?

Thanks.

[Mark Lupo, M.D.]

I would not have started synthroid for goiter in a patient with an already low or borderline low TSH.  A low TSH is usually indicative of hyperthyroidism (not hypo).  Adding synthroid in this situation runs the risk of making you overtly hyperthyroid.

[lumley801]

What it sounds like is the specialist put you on that dose to shrink the goiter...
Just based on the numbers, if you have a low-normal TSH and you add, say, Synthroid, you will become more hypER, not hypO.

Did your doc test for antibodies?  Sometimes you can have a normal TSH and have symptoms (including goiter)...and when the doc checks for antibodies and they're positive, they may try thyroid hormone.

Just throwing some thoughts out there...