Popular hair and nail vitamin may skew your blood work
NCT ID NCT07302880
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how taking biotin (vitamin B7) supplements can interfere with certain blood tests. Researchers will give 24 healthy adults either a single dose of biotin (10 mg or 100 mg) or a placebo, then take blood samples over several hours to see how test results change. The goal is to understand when the interference is strongest and how long it lasts.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
biotin (vitamin B7)
What this could lead to
If successful, this could help doctors know how long to wait after taking biotin before getting accurate blood test results.
What could go wrong
This is a small, early study with only 24 healthy participants, so findings may not apply to everyone or to all types of blood tests.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Study contacts
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Contact
Email: •••••@•••••
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Contact
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Locations
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Department of Clinical Biochemistry, Bispebjerg University Hospital, Copenhagen
RECRUITINGCopenhagen, Denmark
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