Requirements and Policies
Fees and Test Dates
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).
To apply for the exam,
submit an application
with the appropriate fee to the Professional Testing Corporation (PTC), NBNSC's testing partner.
The exam content outline and application is included in the candidate handbook. To access the content outline, download the
If you will require a special testing location, please submit the
Special Test Center Request Form
and submit with your application.
To obtain an additional application for the Certification Examination for Nutrition Support Clinicians, contact the Professional Testing Corporation (PTC), 1350 Broadway, 17th Floor, New York, NY 10018 (212) 356-0660,
All requests for receipt of payment for the CNSC exam should be addressed to the Professional Testing Corporation (PTC) at (212) 356-0660 or