Does biotin affect blood counts? Biotin in blood or other samples taken from patients who are ingesting high levels of biotin in dietary supplements can cause clinically significant incorrect lab test results.
Why does biotin affect blood tests? Excess biotin in the blood from supplements can block that binding and the substance won’t be measured accurately. 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.
When should I stop taking biotin before a blood test? 8 hours
Related Questions
How much biotin interfere with lab tests?
Individuals who regularly take more than 5,000 mcg of biotin per day may have an excess amount in their blood, which can interfere with some types of laboratory tests called immunoassays. This is because some immunoassays use biotin as part of the reagent mixture in the testing method.