https://www.thyroid.org/thyroid-function-tests/
Jun 8, 2020 - The major thyroid hormone secreted by the thyroid gland is thyroxine, also called T4 because it contains four iodine atoms. To exert its effects, T4 is...
thyroid function testsamerican association
https://pubmed.ncbi.nlm.nih.gov/28614993/
A Single 10 mg Oral Dose of Biotin Interferes with Thyroid Function Tests
oral dosesinglemgbiotin