Jul 31, 2018 - vals (RIs) for thyroid-stimulating hormone (TSH), free thy- roxine (FT4) and free tri-iodothyronine (FT3) are not avail- able to aid interpretation.
Michelle S. Jayasuriya, Kay W. Choy*, Lit K. Chin, James Doery, Alice Stewart, Philip Bergman and Zhong X. Lu
Reference intervals for neonatal thyroid function tests in the first 7 days of life https://doi.org/10.1515/jpem-2018-0007 Received January 3, 2018; accepted July 12, 2018; previously published online July 31, 2018
Abstract Background: Prompt intervention can prevent permanent adverse neurological effects caused by neonatal hypothyroidism. Thyroid function changes rapidly in the first few days of life but well-defined age-specific reference intervals (RIs) for thyroid-stimulating hormone (TSH), free thyroxine (FT4) and free tri-iodothyronine (FT3) are not available to aid interpretation. We developed hour-based RIs using data mining. Methods: All TSH, FT4 and FT3 results with date and time of collection from neonates aged
