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S. Sarisky DO.
S. Sarisky DO., Doctor
Category: Health
Satisfied Customers: 509
Experience:  board certified family physician 12 yrs
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why is my tsh level 0.007 but my t-4 is normal

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Submitted: 10 years ago.
Category: Health
Expert:  S. Sarisky DO. replied 10 years ago.
your tsh is you thyroid stimulation hormone your t4 is your actual level of thyroid function. tsh is how much your brain has to tell your thyroid gland to do - in your scenario your tsh is very low but the thyroid function is normal. this means that the gland is working overactively to maintain levels and requires no stimulation. this would happen if you are taking too much thyroid medicine or if you are hyperthyroid. presently you are doing fine because your t4 is normal but generally it is only a matter of time before you overactive gland overproduces thryroid hormone and your t4 goes up