Can I have a Thyroid issue even if my levels are normal?

[mtaren11]

Hi there,

I've been suffering from nearly every symptom of Hyperthyroidism for years now. Irregular heartbeats that have been checked out by EKG, holter, and Echo with everything structurally normal. I have tremors/twitches all through my body and specifically my hands, anxiety and panic disorder since I was 10, and recent unexplained weightloss. I got a blood test last week and my TSH was 2.18 and my Free T4 was 1.09. The doctor says those are all normal numbers. I have no idea what could be causing all these symptoms if not a thyroid disorder. Is it possible to have normal levels but still suffer from all the same symptoms of someone who doesn't have normal levels? I'd just love to know what is causing all this drama. Thank you so much.

[Barb135]

It's possible to have a thyroid issue with normal numbers, but what you've posted, so far, doesn't indicate hyperthyroidism; if anything, the numbers appear to lean toward hypo, but we need to know the reference range for the Free T4, as ranges vary lab to lab and have to come from your own report.

Did you have a Free T3 test done?  Free T3 is the hormone that's used by every cell in the body and correlates best with symptoms.  I wouldn't rule anything out, without a Free T3 test.

Have you had a thyroid ultra sound?  Do you know if you have any nodules on you thyroid?  One possibility is a nodule that's producing independently of the thyroid.  However, one would expect your FT4 levels to be higher than they appear to be.