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Great news for my daughter! She was told her TSH was zero and sent to an endo, who diagnosed her as hyperthyroid, even without any symptoms. Fast forward, 2nd endo was excellent and wise enough to ask her about supplements. When she told him she took Biotin he had her stop for 2 weeks and retest. Her readings came back Normal!! TSH & T's normal.
I was also retested after stopping Biotin. I'm still low but higher than I was last test when on Biotin. I have a nodule suppressing my TSH but only by a small amount. So I'm not taking Methimazole, which made me sick as a dog as I don't believe I need it. I think it made my hypo. I'm still taking supplements and L Carnitine and watching it. I don't think my nodule is active enough to warrant meds.
Wanted to share the good news about my daughter and let others know Biotin does not affect your thyroid but it can affect the TSH test depending upon the lab. Even though I'm still considered very mildly hyper, my TSH almost doubled when stopping Biotin prior to test. My T's are normal. It's a good day!
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