Ask the right questions.

Get the background on biotin, and important context and perspective for your lab.

What is biotin?

Biotin, also called vitamin B7 or vitamin H, is a water-soluble vitamin of the B complex.

Who is taking biotin?

30-60

mcg/day

Multivitamin

No recommended daily intake (RDI) exists, as deficiencies are rare

5-10

mg/day

Hair & nail supplement

More than125 times the suggested intake

>10

mg/day

Experimental therapeutic regimen

Doctor-directed for specific patient populations

Why are physicians talking about biotin?

Despite the lack of clinical evidence, high-concentration biotin supplements are being sold over-the-counter, promising to promote hair, skin and nail health. As all laboratory testing is susceptible to interferences, biotin is one of the many supplements with the potential to interfere with results.

Ask the right questions.

Get the background on biotin, and important context and perspective for your lab.

What is biotin?

Biotin, also called vitamin B7 or vitamin H, is a water-soluble vitamin of the B complex.

Who is taking biotin?

30-60 mcg/day

Multivitamin

No recommended daily intake (RDI) exists, as deficiencies are rare

5-10 mg/day

Hair & nail supplement

More than 125 times the suggested intake

>10 mg/day

Experimental therapeutic regimen

Doctor-directed for specific patient populations

Why are physicians talking about biotin?

Despite the lack of clinical evidence, high-concentration biotin supplements are being sold over-the-counter, promising to promote hair, skin and nail health. As all laboratory testing is susceptible to interferences, biotin is one of the many supplements with the potential to interfere with results.

What dosage levels might cause interference?

Standard multivitamin intake of biotin (30-60 mcg) poses no risk of interference. Very high doses, more than 5,000 mcg per day, do have the potential to lead to test interference. Because biotin deficiency is very rare, there is no official recommended daily intake for biotin in the U.S. Suggested intake for adults ranges from 30 to 100 mcg.1

What dosage levels might cause interference?

Standard multivitamin intake of biotin (30-60 mcg) poses no risk of interference. Very high doses, more than 5,000 mcg per day, do have the potential to lead to test interference. Because biotin deficiency is very rare, there is no official recommended daily intake for biotin in the U.S. Suggested intake for adults ranges from 30 to 100 mcg.1