Abnormal thyroid function tests in this euthyroid patient were found to be false due to significant interference of supraphysiological levels of plasma biotin. Laboratory tests applying immunoassays using a biotin-containing reagent should be interpreted with caution in patients on biotin substitution.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.