Biotin, or vitamin H, is an important compound found in the blood. It is crucial for helping the liver, eyes and nervous system to function properly. It also has a role in keeping hair and nails healthy.
What might a low result mean?
Low levels of biotin can be caused by Crohn's disease, prolonged oral antibiotic therapy and pregnancy.
What might a high result mean?
Elevated levels of biotin can be caused by excessive intake of the vitamin, for example by taking too many supplements.