Thyroid Cancer / Nodules & Hyperthyroidism Expert Forum
decreasing TSH but low T3
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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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decreasing TSH but low T3

With no change to my thyroid meds (I take T4 and T3), my TSH has been decreasing over the past 4 months (it is now .22). My T3 level, however, is below normal. What might be going on? In case it's relevant, I was diagnosed with diabetes 6 months ago and I take Metformin.
Tags: T3, TSH
97953_tn?1193367871
change in absorption is possible, would monitor and adjust meds as needed.
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Thyroid & Endocrine Center of Florida
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