Originally Posted by Jeffreymak
Is my doctor wrong?
Very probably. Here's why:
There are two T4 tests that can be done. If your MD is testing your total T4 instead of the more accurate free T4, he's wrong. If you have a printout of the test that was done, you may want to share it here with the lab range so we can better say what's going on.
If your free T4 is below lab median, it's almost certainly too low and would be the cause of your lingering symptoms. To say that T4 is "normal" only because it's between the high and low of the lab range is wrong! You have one place in that range where you feel well. Anywhere else is like saying your size 11 foot should feel fine in a size 9 shoe just because both sizes are within the typical size range.
Count him wrong if your T4 is basement-level and he thinks that's "normal". Ninety percent or so of patients need free T4 within the upper half of the lab range to eliminate thyroid symptoms.
Thirdly, if he's totally ignoring you, the patient, in favor of a paper-and-ink lab report, he's dead wrong. To what would he be attributing the fact that you don't feel well?