The FDA Warns: BIOTIN May Interfere with Laboratory Testing
- Patients on high dose supplements of biotin (minimum 5-10 mg/day), such as hair/nail/ skin supplements, should refrain from taking them in the 24 hours prior to laboratory test.
- Supplements may or may not prominently indicate they contain biotin.
- Patients taking prescribed megadose regimens (>150 mg biotin, usually prescribed for multiple sclerosis) should refrain from taking the supplements for 2-3 days prior to laboratory testing, after consulting with their physician.
The level of biotin typically found in multivitamin tablets does not interfere with laboratory testing.