Last Revised: October 28, 2021

Published by the Centers for Disease Control and Prevention (CDC) and the National Institutes of Health (NIH), the BMBL outlines best practices for the safe conduct of work with biological materials. Topics covered in this document include biological risk assessment, principles of biosafety, laboratory biosafety level (BSL) criteria, animal biosafety level (ABSL) criteria, principles of laboratory biosecurity, occupational health, and agent summary statements.