[Anonymous]

#1020091

Even after almost 2 years I still have a problem with understanding TSH levels. It’s been over 9 months post RAI and I am with a new Internist. He checked my TSH levels and said I was at 4, and that it was okay. He said the theory is now to try and push the level down to 3.5 so he increased my dosage from 112 mg to 125.

I just don’t get it. Any help would be appreciated.

Thanks and Merry Christmas to all!

[Anonymous]

#1075973

I’m not quite sure what it is you do not understand, so some of the following info may be something you already know…..

TSH comes from the pituitary gland, and is used to stimulate the thyroid to produce more thyroid hormone. When the pituitary gland detects sufficient thyroid hormone, it maintains the level of TSH. When it detects too little thyroid hormone it increases the TSH. When it detects too much thyroid hormone, it DEcreases the amount of TSH released. So, think of a seesaw with actual thyroid hormone at one end and the TSH at the other. That is the relationship — more or less — between the two.

By INcreasing your dose of replacement hormone, your doctor is trying to DEcrease the TSH.

Just was is “normal” when it comes to the range for TSH has changed a bit in recent years. There is a newer, better test for it, and there are other ocnsiderations that have led the medical community to adjust what is considered “normal.” That may be what your doctor was referring to.

I hope this helps.
Bobbi — NGDF Online Facilitator

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