# Vitamin B7

> This test measures the amount of vitamin B7, also known as biotin, circulating in your blood. It helps show whether your body has enough of this nutrient to support healthy skin, hair, nerves, and the conversion of food into energy. Doctors use this measurement to determine if a vitamin deficiency is the reason for symptoms like hair thinning, skin rashes, or brittle nails. While it detects low levels, this test alone cannot diagnose the specific medical condition or genetic factor causing the deficiency.

- Labcorp code: 070097
- Category: [Nutrients](https://app.picardo.health/labs/tests/nutrients.md)
- Price: shown at checkout, before payment.
- Blood draw: free at a Labcorp location, or $75.00 at home.
- Order link: https://app.picardo.health/labs/order?tests=070097&ref=assistant

## About ordering

A licensed physician reviews every order before any test is run, and results arrive in the person's Picardo account. Ordering is open to adults 18 and over in the US, except New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii and Maine. General health information, not medical advice.