Commission on Dietetic Registration owns the exam outline, eligibility rules, fees, and dates, and those documents are the exam. The structure below uses the board's own codes and titles, so you can check it against the source.
Make the outline a scoreboard
Go through the outline domain by domain and grade yourself two ways: can you answer correctly, and can you answer quickly. Anything that fails either test goes on your study list. Re-grade weekly. The shrinking list is your progress measure, not hours logged.
2027–2031 structure
4 domains and 53 objectives in the recorded outline.
| Domain | Topics |
|---|---|
| I. Fundamentals of Dietetics Practice (23%) |
|
| II. Community and Public Health Nutrition (22%) |
|
| III. Human Nutrition and Medical Nutrition Therapy (40%) |
|
| IV. Food Science and Food Systems (15%) |
|
2022–2026 structure
4 domains and 16 objectives in the recorded outline.
| Domain | Topics |
|---|---|
| I. Principles of Dietetics (21%) |
|
| II. Nutrition Care for Individuals and Groups (45%) |
|
| III. Management of Food and Nutrition Programs and Services (21%) |
|
| IV. Foodservice Systems (13%) |
|
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The MasteryEngine readiness check for the RD exam opens when its question bank does.
MasteryEngine is an independent exam-preparation platform and is not affiliated with, sponsored by, or endorsed by the Commission on Dietetic Registration (CDR) or the Academy of Nutrition and Dietetics. RD and RDN are credentials/marks of CDR; all certification names and trademarks are the property of their respective owners and are used for identification purposes only. MasteryEngine does not provide CDR continuing-education credit and does not guarantee exam eligibility or passing. For official exam information, visit cdrnet.org.
Sources: CDR Registration Examination for Dietitians overview. CDR examination resources. RD examination eligibility requirements. cdrnet.org.