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Biotin in Australia: lab tests and what to know
TL;DR
Biotin supplements can cause falsely high or falsely low results on some laboratory tests (NIH ODS). Tell your doctor you take biotin before any blood test. The Australian/NZ NRVs set no upper limit for biotin.
Lab tests
Biotin supplements can cause falsely high or falsely low results on some laboratory tests (NIH ODS). Tell your doctor you take biotin before any blood test. [1]
Upper limit
The NRVs say there is insufficient evidence of adverse effects to set a UL for biotin. [2]
Prices in Australia
Price check pending. We couldn't verify relevant current Australian retailer prices, so none are shown.
FAQ
Is biotin in hair, skin and nails products?
Often, yes. Check every label and tell your doctor before blood tests.
Sources
- Biotin – Fact Sheet for Health Professionals (NIH ODS)
- Nutrient Reference Values for Australia and New Zealand: Biotin (NHMRC, Eat For Health)
Sources checked 15 Oct 2026. Pending human review before publication.