Biochemical Hyperthyroidism in a Newborn Baby Caused by Assay Interaction from Biotin Intake

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Abstract

We describe a case of biochemical neonatal thyrotoxicosis caused by biotin supplementation. Biotin may interact with thyroid function testing to imitate thyrotoxicosis with low thyroid-stimulating hormone and elevated triiodothyronine and thyroxine levels.

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