Misdiagnosis of Graves' Disease with Apparent Severe Hyperthyroidism in a Patient Taking Biotin Megadoses.

@article{Barbesino2016MisdiagnosisOG,
  title={Misdiagnosis of Graves' Disease with Apparent Severe Hyperthyroidism in a Patient Taking Biotin Megadoses.},
  author={Giuseppe Barbesino},
  journal={Thyroid : official journal of the American Thyroid Association},
  year={2016},
  volume={26 6},
  pages={860-3}
}
BACKGROUND Accurate immunoassays measuring minute quantities of hormones are the cornerstone of the practice of endocrinology. Despite tremendous advances in this field, novel pitfalls in these tests emerge from time to time. Oral biotin can interfere with immunoassays of several hormones. The purpose of this report is to relate an extreme case of such interference. PATIENT FINDINGS A patient with progressive multiple sclerosis was found to have extremely elevated free thyroxine… CONTINUE READING
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