Thyroid Cancer / Nodules & Hyperthyroidism Expert Forum
Changes in labs
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Questions in the Thyroid forum are answered by Mark Lupo, MD. Topics covered include Goiter, Graves Disease, Hyperthyroid, Parathyroid/Calcium Problems, Thyroid Cancer, Thyroid Nodules/Cysts, Thyroiditis, Thyroid & Pregnancy, Thyroid Stimulating Hormone (TSH), Thyroid Tests, and Thyroid Surgery.

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Changes in labs

I had my Thyroid tested in 2007 results as follows:
T3 Up-take 39.7   32.0-48.4
T4 8.7   4.0-12.0
T7   8.7   4.2-13.0
TSH  1.06   0.3-5.0

We just retested this month and got the following:
T3 Free 3.3    2.5-3.9
T3 Up-take 34.9   32.0-48.4
T4 6.4   4.0-12.0
T4 Free  0.8   0.6-1.8
T7   5.4   4.2-13.0
TSH  1.570   0.3-50

I am just wondering about the changes in my levels. I am not on any medication at this time. Is the decreasing T3,T4, and T7 and increasing TSH anything significant? I know my levels are in the "normal" range, however, I would like to know more about these changes in my levels. I am 31 and not currently on any medication.

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These are both normal sets of labs with normal variation with time.
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