Taking biotin? Tell your doctor before your next blood work
The hair vitamin almost all of us have tried can quietly change some lab results.
Biotin is in most hair gummies, often at 5,000 or 10,000 mcg. That's many times what your body needs in a day.
Here's what most labels don't say: high-dose biotin can interfere with some blood tests and give results that are falsely high or falsely low. The FDA has warned about it, including for a test doctors use to check for a heart attack, and some thyroid tests.
That doesn't mean biotin is dangerous. It means your doctor should know you take it. Many labs suggest stopping it a few days before blood work, but ask your doctor first.
And if you've taken biotin for months without seeing a change in your crown, that's worth knowing too. Biotin helps people who are truly low in it, which is rare. It doesn't act on the hormone side of thinning after 40.
