← Return to My hyperparathyroidism's worsening it seems. Surgery ahead?

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@roch

raybey | @raybey
One supplement that may affect thyroid test is biotin, which can be found in some multi-vitamins. Biotin use can result in falsely high levels of T4 and T3 and falsely low levels of TSH. You may want to stop taking biotin for at least 2 days before thyroid testing to avoid the risk of having a misleading test.

Also, if taking thyroid meds (levothyroxine); iron, calcium supplements and antacids can lower your body's ability to absorb levothyroxine, so should be taken 4 hours before or after.

Laurie

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Replies to "raybey | @raybey One supplement that may affect thyroid test is biotin, which can be found..."

Thanks for the info and I will keep in mind. Schedule for biopsy and may be prescribed meds. I can be mindful of interactions and side effects. Very helpful. Be well.

Hi Laurie, @roch. Looking forward to when “Volunteer Mentor” will be added to your handle and to meeting you in our zoom meetings. I mainly hang out in the Diabetes & Endocrine System group. Of the topics covered there parathyroid is the thing I know least about. In your post here you are talking about supplements and meds that may affect thyroid test. Did you mean parathyroid? I’m confused. It doesn’t help that they have similar names, are located in the same vicinity and are both part of the endocrine system! Trying to learn a bit more. Thanks.