Got my results

[Anny526]

Hi everyone and thatnks again for all the responses before. I got the results of my "full thyroid panel" . Only 4 things were tested... is there anything else that should have been tested?
Free Thyroxine Index      1.9      (ref. range 1.2 - 4.9)
T3 Uptake                      38                      (24 - 39)
Thyroxine (T4)                5.1                    (4.5 - 12.0)
TSH                              2.521                 (.35 - 5.5)

So my TSH went from a 4.9 to a 2.5 within a few weeks. Are fluctuations like that normal? And both my Free Thyroxine and T3 are at the borders or the normal ranges. Are any of these range numbers out of date the way the TSH range is?

Thanks again for all the help and support!
Anny

[ls222]

Everything looks like it is laying at the low end.  Check your T3 and reverseT3.  
Betcha your body is converting T4 to reverse T3 like crazy.  TSH is down cause your T4 is sufficient (for you) but how is your T3???

Info below duplicates my response to other post

T3 is the hormone that actually does the metabolic regulation.  If your T3 levels are insufficient you will feel lifeless.  Do not rely on saliva tests they are unreliable and inaccurate. You need to have your T3 and Reverse T3 blood serum levels evaluated.  A portion of T4 is converted to T3, or if your conversion mechanism is messed up, to Reverse T3. Reverse T3 is useless to your body and would explain why you continue to feel awful.  Synthroid is bioidentical T4.  My body converts T4 to reverse T3 instead of T3 like it should. It has taken years to find a doctor that checked T4, TSH, T3 and rT3 (reverse T3) to determine find the problem and fix it by balancing my T4/T3 ratio..   I am 5'9", 42 yr old female, 145 lbs and I take 125 mcg T3 and 75 mcg T4.  
If your rT3 is high and T3 low you have most likely found the issue.

Another possibility, uncommon but possible, is that you may have secondary hypothroidism. Secondary hypothryoidism occurs when your pituitary gland is not sending the right hormone signals to your thyroid telling it to get active.