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A 37-year-old female asked:

Graves and rai 12 years ago. 125mcg synthroid (thyroxine). all levels normal. 6 years ago tsh dropped to 0 and free t3 & t4 low normal. tsh won't increase?

1 doctor answer6 doctors weighed in
Dr. Ed Friedlander
Pathology 45 years experience
How do you feel?: This is really the question to be asking. Whoever is managing you may feel a need to lower your dose slightly to see if TSH rises / protect you from osteoporosis later in life / practice defensive medicine, but I'd be most concerned with how you actually feel. If you don't recognize symptoms / signs of hypothyroidism / hyperthyroidism, perhaps doing what's working is best.
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Dr. Cynthia Archer
Internal Medicine 20 years experience
If you have headaches or visual problems, be sure to tell your doctor. On rare occasion a pituitary gland tumor can prevent the production of TSH. Thus could be easily seen with MRI, and confirmed with other blood tests.
Oct 21, 2014
Last updated Nov 11, 2014

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