biotin (vitamin B7, vitamin H)

^[1]^[2]^[3]

Epidemiology

high intake make result in falsely low serum troponin^[2]
interference with thyroid function tests with biotin > 5-10 mg/day
- high free T4, low serum TSH^[3]

↑ Wikipedia: Biotin http://en.wikipedia.org/wiki/Biotin
↑ ^2.0 ^2.1 ^2.2 FDA MedWatch Nov 28, 2017 Biotin (Vitamin B7): Safety Communication - May Interfere with Lab Tests. https://www.fda.gov/Safety/MedWatch/SafetyInformation/SafetyAlertsforHumanMedicalProducts/ucm586641.htm
FDA Safety Communcation. Nov 5, 2019
UPDATE: The FDA Warns that Biotin May Interfere with Lab Tests: https://www.fda.gov/medical-devices/safety-communications/update-fda-warns-biotin-may-interfere-lab-tests-fda-safety-communication
Biotin Interference with Troponin Lab Tests - Assays Subject to Biotin Interference. https://www.fda.gov/medical-devices/vitro-diagnostics/biotin-interference-troponin-lab-tests-assays-subject-biotin-interference
↑ ^3.0 ^3.1 Medical Knowledge Self Assessment Program (MKSAP) 19 American College of Physicians, Philadelphia 2022