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TSH below zero! Now what?

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Posted 1/3/2015 4:08 AM (GMT -6)
Dear companions,

I have an important question.
My last blood work from one mouth ago revealed a TSH of - 0.16. (ranges 0.3-4.5)
Though my levels of free T3 & T4 were midrange and maybe even slightly lower than they should be.
FT3: 3.30 (ranges 2.1-4.2)
FT4: 1.02 (ranges 0.7-1.8)

I'm on 112,5 levothyroxine and 12,5 cytomel daily dose.
Is it safe to have a TSH that low?
Can I even upgrade my meds to 125 levo a day? I still feel hypo and under medicated.
I did hear about the 'optimal' values between the ranges were a lot of people are on their best in their 'sweet spots'.
If the rule of thumb is that FT4 has to be 50% of the range and FT3 upper half to upper third, i's logical that I'm still hypo. This all being said, will my TSH drop even more when I go to 125?

I don't understand the link between TSH and the FT3 & FT4 results. How can I have such a low TSH and still not reach the recommended levels?

Thanks everyone and shoot back if you feel like!
Jeff Bursens
Posted 1/3/2015 4:29 AM (GMT -6)
TSH can never be below zero !

Somebody said...
Is it safe to have a TSH that low?


No it is not !

Somebody said...
Can I even upgrade my meds to 125 levo a day?


No you can't, actually you are hyperthyroid and need to reduce your dose a little to bring your TSH a little bit higher, between 1.5-3 .


Somebody said...
will my TSH drop even more when I go to 125?


Yes it will and become close to zero and this, in turn, will make you more hyper !
Posted 1/3/2015 7:34 AM (GMT -6)
I'm thinking lab error on this. Saying your TSH fell below 0 is like saying your weight fell below zero. Not possible.
Posted 1/3/2015 9:50 AM (GMT -6)
Judy2, I'm so sorry. I misread, my TSH is 0.16 and not - 0.16 which is off course not possible...

HypoHashimoto,
I'm not hyper. In fact, I'm still a little bit hypo. Hundreds of websites, forums and articles claim that TSH that low is safe. TSH is a pituitary hormone, not a thyroid hormone. Its sole purpose is to stimulate the thyroid and once the thyroid stops working, there is nothing to stimulate. TSH neither causes, nor alleviates symptoms, so it's basically useless.
When taking T3 it is almost assured that your TSH will be suppressed and thus testing for it is basically useless. Please understand that a Low TSH causes NOTHING. It is of no concern if you are not hyper or having hyper sysmptoms.

I'm searching for some common ground to be 100% sure. Anyway, I asked this question on many other boards and found myself be confirmed about this time and time again.

With all due respect, people like you make it hard for endocrine patients to find some right answers.
Jeff
Posted 1/3/2015 12:46 PM (GMT -6)
Apparently you didn't really need information, Jeff. I'll leave you to yourself.

The people on this forum are living with thyroid issues just as you are; not doctors or other experts. Most of us have been living with it for years, and offer only our own experience. If you want professional input, you need to find a different site. Good luck to you.
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