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TSH very high, free T3 and T4 normal - what's going on?!

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Old 06-24-2012, 01:52 AM   #1
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Arrow TSH very high, free T3 and T4 normal - what's going on?!


In 2009 my TSH was 3.5, by 2010 it was up to 6.0, and now (mid-2012) it's at 7.1. i.e. A rapid climb from highish to very high. My free T4 and free T3, however, have been consistently normal, so my Pituitary gland seems to be coming to the party.

My current status is:

- TSH: 7.1 mU/L (0.4-3.5)
- Free T4: 16.4 pmol/L (9.0-19.0)
- Free T3: 4.2 pmol/L (2.6-6.0)

What could be going on? How concerned should I be? What is the best way to approach this?

The thing is, I feel absolutely fine! Really quite good and perfectly healthy. In fact, I feel better now than in previous years, experiencing my first ever Winter when I have not really suffered with the cold the way I have my whole life prior, despite being technically hypothyroid.

I am 43, female, and all of my other blood tests make me look like a star student - normal across the board.

Thanks for any insights

Last edited by Finchesca; 06-24-2012 at 05:40 AM. Reason: clarity

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Old 06-24-2012, 10:13 AM   #2
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Re: TSH very high, free T3 and T4 normal - what's going on?!

You have an early form of hypothyroidism technically called "subclinical". Your free T4/3 haven't yet become deficient, therefore, you have no symptoms. You may be headed there, though. Watch for signs/symptoms. Ask to be treated as soon as they appear. Once you get too deep in the pit, it's harder to recover from it. Treating sooner rather than later avoids a lot of problems adjusting to the replacement hormone.
"We can complain because rose bushes have thorns, or rejoice because thorn bushes have roses." Abraham Lincoln

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Old 07-03-2012, 11:26 AM   #3
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Re: TSH very high, free T3 and T4 normal - what's going on?!

Same case with me. Yesterday I got my results which says that I have tsh value where T3,T4 are normal. But I do have symtpoms affecting my health. Have an appointment with Endocrinologist,should see what he suggests.

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