Help Interpreting Test Results

[kittenmittons]

I've never been diagnosed with any thyroid problems (my blood tests have all been normal), but I just had my yearly blood test and these were my results:

TSH: 1.820 (range: .450-4.500 uIU/mL)
T4, Free (Direct): 1.82 (range: .82-1.77 ng/dL)
Thyroxine (T4): 8.7 (range: 4.5-12.0 ug/dL)
Vitamin D: 30.7 (range: 30.0-100.0 ng/mL)

I know Graves seems like the most logical dx, and I have been having anxiety and eye issues (very dry, feel sticky, puffy) but I also had a sinus infection (verified by MRI) that could cause the eye issues, as well.  Could my low vitamin D be playing a role in the slight elevation of my free T4?  I'm JUST in the range of normal on vitamin D.

Thanks!

[kittenmittons]

Thank you so much for your quick reply!!!!  I didn't even notice that both numbers are the same!  I checked, and that's what the report says.  I'll be faxing them to my doctor Monday and probably getting a blood test ASAP.  I do hope it's vitamin d related, but naturally I want to get to bottom of this.  Thank you again!!!!!

[Barb135]

Vitamin D deficiency can mimic hypothyroidism; your vitamin D is obviously too  low in the range - optimal is considered to be between 60 and 80; are you supplementing for that?

Normally, with Graves Disease the TSH would be much lower than your 1.820; however we're all different.  Is the FT4 really 1.82, as well?  That seems odd, but strange things do happen.  Might want to check that just to be sure.

We'd really need to see an FT3 test........ Free T3 is the hormone that's actually used by the individual cells; FT4 has to be converted to FT3.  

Have you had any antibody tests?  Antibody tests for Hashimoto's Thyroiditis are Thyroid Peroxidase Antibodies (TPOab) and Thyroglobulin Antibodies (TGab).  Definitive test for Graves is Thyroid Stimulating Immunoglobulin (TSI).  While Hashimoto's is considered to be mainly a hypo disease, it's often characterized by periods of hyper, in the early stages.  Graves is predominantly considered hyper.