title: Biochemical Hyperthyroidism in a Newborn Baby Caused by Assay Interaction from Biotin Intake.
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.
authors.affiliation: Department of Endocrinology and Medicine, Aalborg University Hospital, Aalborg, Denmark.
authors.forename: Inge
authors.initials: I
authors.lastname: Bülow Pedersen
authors.affiliation: Department of Endocrinology and Medicine, Aalborg University Hospital, Aalborg, Denmark.
authors.forename: Peter
authors.initials: P
authors.lastname: Laurberg
keywords: Assay interaction; Biotin; Neonatal hyperthyroidism