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Low TSH Normal T3 & T4

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MHS
MHS

I have always been treated for hypothyroid. Hashimoto's, I have extremely high anti thyroid antibody levels. This time my TSH was «.01. T3 is normal at 4.0 and T4 normal at 1.45. I was sent for an ultrasound and they found a solid nodule measuring 7mm. I take synthroid and cytomel. Even when my levels rise with synthroid I never convert to a normal level. What could be causing these surprising results? I feel certain the nodule has been there for years. I have never been able to wear turtlenecks or have anything touch my throat without experiencing a choking sensation.

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