Hypothyroid

[lustre]

I have no thyroid.  I had it removed 3 yr. ago because I had a benign tumor in the right lobe and autoimmune disease had damaged my other lobe. After surgery, I was on 125 mcg. levothyoxine for 2-1/2 yr.  My TSH(0.03) was low so I was put on Levothyroxine 112 mcg.  I still had a low TSH(0.05) so I wound up on 100 mcg.  On this dose my blood pressure went up and so did my pulse; I also got slight edema in my ankles.  I told my family physician I thought 100 mcg. was too low, and begged her to allow me to go back on 112 mcg.  She allowed me to stay on 112 mcg. until I can see an endocrinologist.   Doesn't 100 mcg. seem an awfully low dose for someone who doesn't have a thyroid, regardless of what the numbers on the test say?  

[lustre]

Thanks for your comments.  Yes, I have had both lobes of the thyroid surgically removed and an untrasound to see if any remained.  I have no idea why I would have a low TSH on 100 mcg. of levothyroixine.  Sometimes I think medication dosage should be based more on body weight than the result of thyroid tests.  For some people(myself included) thyroid tests can be misleading.

[AR-10]

Yes.

Unless you had RAI as well, you probably have some bits of thyroid left. You may be getting a little hormone there.

I had RAI rather than surgery, and my Endo said I may not need more than 100mcg of Synthroid, but I don't think so. I'm taking that now. I'm guessing maybe 125 or 150 when my gland finally dies. I think she told me that in case I end up with a third of a thyroid left.

A few people can get by on 100mcg, but most people who had TOTAL ablation take between 150mcg and 250mcg.