# Vitamin B12

> This test measures the amount of Vitamin B12 in your blood, a nutrient essential for making red blood cells and keeping your nervous system healthy. It helps show whether low levels are causing symptoms like fatigue, weakness, or tingling in the hands and feet. This measurement assists doctors in ruling out specific types of anemia and nutritional deficiencies. While it detects abnormal levels, this test alone cannot determine the specific reason for a deficiency, such as diet or absorption problems.

- Labcorp code: 001503
- 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=001503&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.