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A member asked:

How many mcg daily dose of biotin interferes with thyroid tests? my daily multivitamins has 75 mcg(250% of daily value) in it. should i stop taking it before thyroid test?

A doctor has provided 1 answer
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

No, the biotin content in MVI does not interfere with thyroid function test. Dose of 5,000 mcg or more may cause spurious results in thyroid test assays using biotin-streptavidin affinity systems in their design.

Answered 1/4/2022

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