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Phentermine and thyroid blood test

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Old 01-11-2013, 07:05 PM   #1
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Phentermine and thyroid blood test

Does anyone know if taking phentermine can mess up thyroid tests? I took a CBC on 10/8 and my TSH was 7.52 and had not been put on phentermine yet. I had another CBC done on 10/26 and my TSH was 3.88 and FT4 1.10 after being on phentermine for 18 days. Could phentermine have given me normal results? I am taking IV iron infusions because my ferritin levels were below one and my doctor wanted to get iron levels up before testing my thyroid again. Anybody know? Thanks!

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Old 01-12-2013, 07:58 AM   #2
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Re: Phentermine and thyroid blood test

I don't know about the phentermine question. But TSH of 3.88 is still too high anyway. That kind of fast flux can happen with the most common cause of hypothyroidism - Hashimoto's thyroiditis. That could be what's going on.
It might be acceptable to sit and wait until your iron level is better, because that can cause mild hypoT. But I still think you're going to need thyroid replacement sooner than later.
"We can complain because rose bushes have thorns, or rejoice because thorn bushes have roses." Abraham Lincoln

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