An official website of the United States government
Here’s how you know
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.
Standard Reference Material (SRM) 967b Creatinine in Frozen Human Serum is intended for use in validating creatinine measurement procedures used by in vitro