Biotin 2.5-10mg/day for hair/nails. CRITICAL: high-dose biotin interferes with immunoassays — causes FALSE thyroid tests, cardiac troponin tests, and hormone panels. Discontinue 72 hours before bloodwork. --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.