The National Board of Nutrition Support Certification (NBNSC) is an independent credentialing board established in 1984 by the American Society for Parenteral and Enteral Nutrition (ASPEN).

Exam Preparation

  • Click here  for a list of suggested study materials from ASPEN. 
Outside organizations may have some study resources available. The NBNSC does not endorse any particular resource.

Please note, when more than one reference is available on a topic, the default reference for the CNSC exam content will be that published by ASPEN.