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high T4
by ifupleze, Feb 22, 2008 03:12PM
My latest test results:
T3 uptake 29.8 Normal
T4 13.2 H (4.5-12.5 norm)
TSH 2.58 norm
My question is why would my T4 be high if my TSH is within normal? I have been on 75mcg synthroid for 5 weeks and will not be getting another test for 3 more weeks. I still feel I have no strength and shaky. All other tests are in the middle range of the norm.
T3 uptake 29.8 Normal
T4 13.2 H (4.5-12.5 norm)
TSH 2.58 norm
My question is why would my T4 be high if my TSH is within normal? I have been on 75mcg synthroid for 5 weeks and will not be getting another test for 3 more weeks. I still feel I have no strength and shaky. All other tests are in the middle range of the norm.
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If it is a total, estrogen can increase it. That would be estrogen from birth control or any other supplemental estrogen.
The TSH would do well to come down a bit. It may continue to come down by the next blood test.
Ask for a free t4for the next time.
T3 uptake is also an outdated test.
Is this an endo ordering these?
The t4 total is the free t4 and the amount bound to a protein and doesn't reflect the actual amount available for your body to use.
Here is a link to Thyroid Manager with a chart for reasons why total t4 may be elevated:
http://www.thyroidmanager.org/chapter6/Ch-6b-5.htm
Have you seen an endo at all?