What markers does a high dose biotin supplement affect?

Biotin is in multiple supplements claiming support for healthy hair, skin, and nails.   Most contain mega doses of biotin. If you are taking any of these supplements, please check the label before testing. It may affect the markers below accordingly. We recommend you stop taking your supplement at least 72 hours prior to your blood draw for the most accurate results.   However, always consult with your healthcare provider prior to stopping any supplements. 


Falsely high
  • Vitamin D
  • Cortisol
  • Folate
  • Testosterone
  • B12
Falsely low
  • Ferritin
  • CRP