Thyroid test results(hypothyroidism? )

[kare2know]

I was diagnosed with hyperthyroidism 10 years ago and was given a radioactive iodine uptake  test after the test nothing else was ever done the following month I lost 35lbs it two weeks but my Dr's continually told me that I was fine, for the next ten years I will be told by my Dr that I am depressed, I  have anxiety , I need SSRI's and so on and so on, I have had severe fatigue and total body exhaustion ever day for the last 10 years, my facial features look as if I had aged 20 years in ten, puffy face weight gain blurred vision cold body temps that I documented at a range of 95.0 - 76.9 degrees, I recently had my thyroid levels checked and the the results are listed below, I'm wondering if I'm hypothyroid? I have a long family history of Hypothyroidism,

(Free thyroxine, my results=2.1 , ranges are 1.2 -4.9)
(T3 uptake, my results =27 ranges are  24-39)
Thyroxine T4, my results = 7.7 Ranges are 4.5-12.0)

[goolarra]

Thanks for checking that.  That's free thyroxine index (FTI), which is different from FT4.  

All three of the thyroid tests your doctor ordered are considered somewhat obsolete and of little use.  The T4 is a total T4, rather than a free T4 (FT4).  However, it is a bit on the high side (nothing to worry about) at 58% of range (the target is 50% of range, so you're just slightly over).  T3 Uptake, despite it's name, is an indirect measure of T4.  FTI is a calculated ratio based on TT4 and T3U (both considered less than useful).

TSH looks good.  

So, the tests ordered are not the best.  We only have TSH and TT4 to go on.  A TSH below about 1.5 seldom indicates hypothyroidism (it can if it's very low, which can indicate a pituitary problem).  TT4, at 58%, of range is actually just a little on the high side, also not an indication hypo.

Have you had vitamins D and B-12 and a complete iron panel tested?  What all our tests measure is the levels of the thyroid hormones in our blood, but there's one further step that has to happen, the thyroid hormones have to get into our cells.  D and ferritin (iron) have to be adequate or cells can't take up thyroid hormone, so you can feel hypo even with adequate serum hormone levels.  D and B-12 deficiencies can also have some of the same symptoms as thyroid deficiency.

Next time you have blood drawn, request (strongly) FT3, FT4 and TSH.  It might also be a good idea to test for the antibodies that indicate Hashi's.  Though Hashi's is ultimately hypo, in the initial stages, it can be hyper, which could be what you experienced 10 years ago.  Were you ever given a cause for your hyper?  The antibody tests are TPOab (thyroid peroxidase antibody) and TGab (thyroglobulin antibody).
  

[kare2know]

Hi, I'm not on or have ever been on any thyroid meds, I've asked numerous Dr's for the last 10 years but they all say I'm within normal range and wouldn't look into it any further, My TSH level was checked and it is,
0.917 uIU/ML with a range of 0.450 -4.500  Thank you.

[kare2know]

I copied and pasted the direct results here.

Thyroid Panel (Collection Date: 01/05/2015 17:17, Status: Final)
Performed At: DV, LabCorp Denver Co.


Component Result Units Flag Range Comment
Free Thyroxine Index 2.1 1.2-4.9
T3 Uptake 27 24-39
Thyroxine (T4) 7.7 ug/dL 4.5-12.0
Lipid Panel (Collection Date: 01/05/2015 17:17, Status: Final)

[goolarra]

That's a very unusual range for free thyroxin (FT4).  Would you mind confirming that?

Are you taking thyroid meds?

Were any other thyroid tests done?