Earned a bachelor's degree with coursework approved by the Academy of Nutrition and Dietetics Accreditation Council for Education in Nutrition and Dietetics (ACEND).

The coursework typically includes food and nutrition sciences, foodservice systems management, business, economics, computer science, sociology, biochemistry, physiology, microbiology, and chemistry.

Completed an accredited, supervised practice program at a health care facility, community agency, or foodservice corporation.

Passed a national examination administered by the Commission on Dietetic Registration.

Some RDNs hold additional certifications in specialized areas of practice, such as pediatric or renal nutrition, nutrition support, and diabetes education.