What blood tests does biotin interfere with? Most of the published research on biotin interference covers hormone tests, such as parathyroid hormone (PTH), thyroid stimulating hormone (TSH), T4 and T3 tests, as well as tests for troponin.
How long should you stop taking biotin for a blood test? For patients that have lab tests planned, she tells them to stop taking their supplements. “If I can control what my patients are doing, I tell them to stop biotin for 1 week,” Burmeister says. Other doctors say it’s probably also wise to consider whether you need to be taking biotin at all.