This is primary regarding the thyroid function post-treatment. During treatments, all 12 of them, never had any thyroid problems. About 3 mon. post Tx w/my last TX, my thyroid became HYPOthyroid. It was so much so, that the docs put me on Synthroid(I was on the generic version). It was making me feel weird, so I convinced them to allow me to gradually taper off of it. And I did do this successfully, over a period of months. Then, about 6 mon. ago, completely off of the Synthroid for quite some time, it, turns, on it's own to HYPERthyroid. It's been retested several times now and it keeps being HYPERthyroid. I've been off the Synthroid for 8 mon and so, it's not caused by that. I've been off of the Hep C for over a year, I think it's been like 17 mon., so it's not that either. My endocrinologist ordered a thyroid uptake scan, which I had done on Mon., and the scan showed that my thyroid was taking up the iodine normally. So, why is my bloodwork so abnormally running HYPERTHYROID?? I just don't know if this is at all related to the Hep C, or to the past TX. The radiologist, on the report for my uptake scan recommended to my endocrinologist that I get a thyroid ultrasound, too. Evidentally, the left side of my thyroid had a slight difference in the cold zones, uptake reading. Have any of you had thyroid issues post treatment? Susan400