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How quickly does TSH change?

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Old 03-07-2008, 11:18 AM   #1
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How quickly does TSH change?

I had thyroid surgery and am now leaning hypothyroid. My TSH in Dec was 2.5 and I'm due for an appt at the end of this month. I know this number can vary by the individual, but was wondering how much this TSH number can change over a 4 month period with hypothyroidism. Thanks!

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Old 03-07-2008, 01:29 PM   #2
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Re: How quickly does TSH change?

TSH isn't static. Untreated, it can change as much as 3 full points in only a 24-hour period. It's higher in the a.m. and gradually tapers off through the day until it begins to rise again around 9 p.m.

When I was first diagnosed hypo, my TSH was just under 7.0. I took a small dose of Synthroid for about 3 months and my TSH became suppressed to just .02. After stopping the Synthroid, my TSH was back to 7 within one month. That's how fast it can change.

You're not just "leaning" toward hypoT with a TSH of 2.5. You probably are hypothyroid. If you're having symptoms, and aren't being treated with supplemental hormone, poke that MD with a stick until he writes you a prescription!

Old 03-07-2008, 01:38 PM   #3
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Re: How quickly does TSH change?

Very helpful reply, thanks so much!

My endo in Dec. said that at 2.5 she'd like me to start on Synthroid. I wanted to wait until the next appt. to see where I was headed. I see her at the end of March and I can tell that I definitely need the meds. I go for the bloodwork soon, I just wanted to see how much I could expect it to change.

Thanks again!

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