Biotin supplementation interferes with standard hormone, other dosages

Disclosures: Aldasouqi reports that he is a consultant for Abbott Diagnostics.

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SAN DIEGO — In this exclusive video, Saleh Aldasouqi, MD, FACE, ECNU, discusses false highs or false lows in some hormone tests for people taking high doses of biotin in beauty and energy supplements, for example.

Aldasouqi is a professor of medicine and head of the division of endocrinology at the Michigan State University College of Human Medicine in East Lansing.

Small amounts of biotin, or vitamin B7, in multivitamins aren’t a problem, Aldasouqi said. However, in larger amounts, serum biotin interferes with the biotin in the reagent of many standard blood tests, producing falsely high levels for small molecules and falsely low levels for large molecules. The result can mean misdiagnosis and unnecessary or even harmful treatment.

Aldasouqi recommends stopping biotin 3 days to 1 week before testing for accurate results.

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