over medicating

[stapitfoo]

I had a thyroidectomy 23 years ago, where I was told that I had been left with "a little finger nail" size piece of thyroid,  Following this I have been on 150 micrograms of Levothyroxine for all of these years and have had no problems.  Having had a blood test yesterday my tsh is showing as 29 and the suggestion is that this is due to over - medication.  I have absolutely no symptoms of HYPERthyroidism whatsoever ( I know what these are as that is what started the problem in the first place!) and feel fine on my current dose.  My doctor is going to suggest that I reduce the dose, but am I right in thinking that it should be either left the same or increased?
What is the correct treatment for this raised tsh?

Thanks

[stapitfoo]

I will look out last year's results to compare.  No, I have no hyperthyroid symptoms at all, no tremors, weight loss, palpitations, feeling hot, all of which I experienced when I developed Thyrotoxicosis.

I am concerned that my doctor will want to reduce the daily amount.  I do not want to start feeling under active and all that entails!
Thanks very much for your input - it is much appreciated.

[goolarra]

Thanks for clearing that up for me.

Okay, so different discussion...LOL

Your FT4 (29.0) is considerably above the top of the range (19.8).  Your TSH is just about undetectable.  Both of those indicate that you might be over medicated.  However, you don't have hyper symptoms, so that throws it all into more of a gray area.  It's not unusual, once on meds, to have TSH suppressed, but the FT4 is a little more concerning.

Any symptoms at all?  

Do you have previous results to compare these to?  If you do, and they're from a different lab, the reference ranges will probably be different, too.

[stapitfoo]

Sorry about that. The above results are taken directly from the computer.  I mistakenly posted incorrect information in my first post.

[goolarra]

TSH is a pituitary hormone, so it's less reliable than FT3 and FT4 in determining thyroid status and whether you need an increase or decrease.

But, wait, I'm confused.  In your original post, you said your TSH was 29.  Is it actually your FT4 that's 29.0?  Please clarify before I go on.  Thanks.    

[stapitfoo]

Hi there.  Thanks for that.

The full reference range of the blood test is as follows

TSH                              < 0.1       (0.3 - 5.5)

FREE THYROXINE      29.0      (10.0 - 19.8)

FREE T3                     5.4         (3.5 - 6.7)

What do you make of these?

[goolarra]

TSH is counterintuitive.  So, when it goes up, you need to increase meds, and when it gets too low, if you have hyper symptoms, you should decrease meds.  However, symptoms are what really count.  Do you have any hypo symptoms, which is what we'd expect you to have with high TSH?  

Did they test FREE T3 and FREE T4, too?  If so, please post those with reference ranges.