Who Grants? Associated Organization

Requirements to Attain

Certified Nutrition Support Nurse

National Board of Nutrition Support Certification

American Society for Parenteral and Enteral Nutrition


Recommend 2 years of nutrition support experience

Successful completion of written exam Renew every 5 years

Certified Nutrition Support Pharmacist

Board of Pharmaceutical Specialties

Current, active license to practice pharmacy

3 years practice (upon completion of a nutrition support residency or fellowship, this requirement is decreased to 1 year)

Successful completion of written exam

Other Certification

Certified Nutrition Specialist (CNS) (not advanced-level)

Certification Board for Nutrition Specialists

American College of Nutrition

Advanced degree in nutrition from regionally accredited program

At least 1,000 hours supervised experience or at least 4,000 hours unsupervised experience; successful completion of written exam

Renew every 10 years

NOTE: For additional information see Chernoff R, Bruner D, Fitz P, Gannon J, Glade M, Hausman P, Howell WH, Jensen G, Stallings V, Wallach S, Zeisel S. 1997. Credentials available in human clinical nutrition: A report of the Intersociety Committee on Nutrition Certification. Am J Clin Nutr 65:1562–1566.

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