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Old 12-15-2007, 09:33 PM   #1
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pray33 HB User
what does TSH level of .25 mean

what does TSH level of .25 mean? I was treated for hyperthyroidism a year ago with redioactive iodine. Then became hypothyroid. I was treated with levoxyl and they finally got my levels at normal until recently I was not feeling so good and had another blood test and now am at .25 TSH. Is this normal to become hyperthyroid again? They are going to reduce my dosage of levoxyl. Why would I become hyperthyroid again?

Last edited by pray33; 12-15-2007 at 09:44 PM.

 
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Old 12-22-2007, 07:09 PM   #2
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era46 HB User
Re: what does TSH level of .25 mean

Quote:
Originally Posted by pray33 View Post
what does TSH level of .25 mean? I was treated for hyperthyroidism a year ago with redioactive iodine. Then became hypothyroid. I was treated with levoxyl and they finally got my levels at normal until recently I was not feeling so good and had another blood test and now am at .25 TSH. Is this normal to become hyperthyroid again? They are going to reduce my dosage of levoxyl. Why would I become hyperthyroid again?
The **** guidelines are: 0.3 < TSH < 3.0. You are on the edge of being hyper, so you should decrease your T4 dose. However, I would hope your doctor is also doing other tests (e.g. FT4) to judge where you are.

Reduction of thyroid output via drugs, or radioactivity, isn't an exact science. You should expect to have some variation in your remaining natural thyroid output for awhile. You might want to ask your doctor to do testing more often, though most of them don't want to do it more often than every 6 weeks or so.

 
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Old 12-22-2007, 07:12 PM   #3
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Re: what does TSH level of .25 mean

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Originally Posted by era46 View Post
The **** guidelines are: 0.3 < TSH < 3.0. You are on the edge of being hyper, so you should decrease your T4 dose. However, I would hope your doctor is also doing other tests (e.g. FT4) to judge where you are.

Reduction of thyroid output via drugs, or radioactivity, isn't an exact science. You should expect to have some variation in your remaining natural thyroid output for awhile. You might want to ask your doctor to do testing more often, though most of them don't want to do it more often than every 6 weeks or so.
For some reason, I referred to the **** (A.A.C.E.) , or American Association of Clinical Endocrinologists, reference range for TSH. For reasons unknown, the software on this board changed the string "****" to a string of asterisks. Go figure!

 
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