 Image Number D2837-9 |
A new vitamin B12 assay developed by ARS scientists at the Western Human Nutrition Research Center, Davis, California, requires only a tiny drop of blood rather than a standard 1-milliliter sample.
Photo by Stephen Ausmus.
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.