level

[negro1974]

what does 0.04 tsh level mean?

[Super_sally888]

Agree with Gimmel.  If all other results (FT3 and FT4) are well within the reference range  AND you feel ok (no hypo or hyper signs or symptoms) a low TSH is of no concern.

I currently have a non-detectable TSH.  My FT3 and FT4 are within range.  So in my case we just ignore TSH.

It is quite common for TSH to be suppressed when medicated on thyroid replacement.

However, if your TSH is very low and you have hyper symptoms and your FT3 and FT4 are high further investigation and treatment is likely required.  If you are on thyroid meds, it would indicate that you need to decrease the meds a bit.

[gimel]

My TSH has been less than .05 for over 25 years, with no hyper symptoms.  In fact I continued to have slight hypo symptoms until I learned about the importance of FT3, which in my opinion is the most important thyroid hormone because it is four times as active as FT4 and FT3 correlates best with hypo symptoms.  It is not at all unusual for TSH to be suppressed to the low end of range and below when on thyroid meds.  That does not mean you are hyper, with all the attendant worries that go with it.  You are hyper only if you have hyper symptoms along with the low TSH.  

Bottoms line is that a TSH result is not very useful in the absence of other test results to help understand the potential cause.  

[soozzze]

Hi gimel, like negro1974 I also got results showing tsh (0.03) and all other bloods were normal, perhaps that's the case with negro. I am worried, I expect she is, some doctors are not always clear and mine just said to wait 6 weeks for another test!

[gimel]

Ahhh, come on now, you're going to have to give us a bit more info than that, or we'll have to resort to the old crystal ball.  Were any other tests done?  If so, please post the results and reference ranges used by that lab.  Have you ever been diagnosed as being either hyper or hypo?  Are you on thyroid meds?  If so, what kind and how much daily?