tsh levels

[helenbroom]

I have recently had a blood test to check my thyroid me levels came back ok however my tsh level was low.  I have been having all the symptoms of an underactive thyroid particulary weight gain.  My GP has dismissed this so i am very much at a loss, and wondering if you could shed some light on this for me please.

[gimel]

Low TSH can be a symptom of problems other than hyperthyroidism.  That is why I suggested getting the "Frees" tested, as a diagnostic help.  Also, going to just any endocrinologist does not guarantee expertise in thyroid problems.  Many specialize in diabetes.  I would get the blood testing done and discuss options with the doctor, and with members here, then you can determine the need for a good thyroid doctor.

[summeri56]

Low tsh is a sign of hyperthyroidism.I would go to an endocrinologist to have it checked out if you are worried about it.They are specialist in thyroid disease and diabetes.Tests are free t4 and also t3 if you still have a thyroid.

[gimel]

It would be much more useful to have test results for the actual, biologically active thyroid hormones, which are FT3 and FT4.  These tests are not to be confused with total T3 and total T4.  Free T3 is actually the most important, because it is four times as potent as FT4 , and it correlates best with hypo symptoms.  TSH does not correlate with hypo symptoms very well at all.  So I suggest that you pursue getting blood tests for FT3 and FT4 as your first priority, then you can see if low levels of these hormones account for your symptoms.  Make sure you get a copy of the lab report, and post results and reference ranges so that our many experienced members can provide the bet response.

In the interim, I think you will  find this link to be very worthwhile reading for you.

http://www.hormonerestoration.com/Thyroid.html