# Free RD Exam Practice Test

> Free RD / RDN practice test — free 25-question diagnostic, no signup; full mock: 120 timed questions, 120 minutes, 70% readiness target, four CDR domain scores. Official exam is CAT 125–145 items / 3 hours / scaled 25. Then repair with the $11 / 240-card Anki deck. Independent — not CDR material.

UniPrep2Go's free RD Exam practice test is a 25-question, 25-minute timed diagnostic with a free topic report and answer review — no email, no account. The full mock is 120 questions / 120 minutes on the $5 UniPrep2Go Mock Pass (5 attempts on any mock).

## What is the RD Exam exam?

The Registration Examination for Dietitians from the Commission on Dietetic Registration (CDR) is the national exam required to become a Registered Dietitian Nutritionist (RDN) after completing an ACEND-accredited education pathway and supervised practice. The computer-adaptive exam delivers 125–145 items (including 25 unscored pretest questions) in 3 hours and uses a scaled score of 1–50 with a passing point of 25. Current 2022–2026 domain weights are Principles of Dietetics 21%, Nutrition Care for Individuals and Groups 45%, Management of Food and Nutrition Programs and Services 21%, and Foodservice Systems 13%. UniPrep2Go’s free timed check is an independent diagnostic — not a CDR or Pearson VUE exam.

- Administered by: Commission on Dietetic Registration (CDR)
- Official format: Computer-adaptive multiple-choice, 125–145 total items (100–120 scored + 25 pretest), 3 hours; scaled pass score 25/50. The 2022–2026 domains apply through December 31, 2026; from January 1, 2027 CDR switches to the 2027–2031 outline (Fundamentals 23%, Community and Public Health 22%, Human Nutrition and MNT 40%, Food Science and Food Systems 15%).

## Official certification resources

Topic weights and timing follow published Commission on Dietetic Registration (CDR) outlines. Verify fees and scheduling on the official site — UniPrep2Go questions are independent study aids.

- [CDR — RD Handbook for Candidates](https://www.cdrnet.org/rd-handbook)
- [CDR — RD exam test specifications (2022–2026)](https://admin.cdrnet.org/vault/2459/web/2022%20RD%20Test%20Specifications%20without%20detail%20CDR%20approved%209%202020%5B1%5D.pdf)
- [CDR — RD exam test specifications and study outline (2027–2031)](https://www.cdrnet.org/vault/2459/web/2027-2031%20RD%20Test%20Specifications%20and%20Expanded%20Study%20Outline.pdf)
- [CDR — Study resources](https://www.cdrnet.org/study)

## Product facts

- Slug: rd-exam-readiness-check
- Practice test label: RD Exam practice test
- Vertical: nutrition (https://uniprep2go.study/mock-exams/v/nutrition)
- Family: rd
- Linked deck: rd-exam-anki-deck
- Linked deck status: available
- Linked deck checkout: https://pixidstudio.gumroad.com/l/rd-exam-anki-deck?wanted=true
- Status: live
- Access mode: free_timed_mock
- Questions: 120
- Duration: 120 minutes
- Free version: free 25-question / 25-minute diagnostic (1 attempt, no signup); full 120-question mock on Mock Pass
- Free question count: 25
- Free duration: 25 minutes
- Pass threshold: 70%
- Price: Free 25-question diagnostic, then $5 for 5 full attempts
- Pricing note: Your first UniPrep2Go attempt is free: a 25-question timed diagnostic on any exam (Exam or Learn mode, no signup) with the full topic report. Full-length mocks and retakes run on a $5 UniPrep2Go Mock Pass (Gumroad license key): 5 attempts on any mock. After your score, buy the linked Anki deck on Gumroad to drill weak topics with spaced repetition.
- Mock Pass: $5 for 5 attempts on any mock — https://pixidstudio.gumroad.com/l/uniprep-mock-pass
- Exam body: CDR (Commission on Dietetic Registration)
- Search aliases: RD, RDN, dietitian
- Landing page: https://uniprep2go.study/mock-exams/rd-exam-readiness-check
- Facts JSON: https://uniprep2go.study/api/mock-exams/rd-exam-readiness-check

## About this free practice test

A timed 120-question / 120-minute linear diagnostic across CDR’s 2022–2026 domains (Principles 21%, Nutrition Care 45%, Management 21%, Foodservice 13%) — then drill weak rows in the linked $11 / 240-card Anki deck. Official Registration Examination for Dietitians is computer-adaptive 125–145 items in 3 hours with scaled pass 25/50. This check is not CAT and is not Pearson VUE. From January 1, 2027 CDR regroups domains; this bank still uses 2022–2026 labels.

- Built for: Dietetic interns and RDN candidates after ACEND-accredited education and supervised practice who want a timed domain report before Pearson VUE — not DTR/NDTR and not a nursing or CPT bank.
- Topics: Principles of dietetics, Nutrition care for individuals and groups, Management of food and nutrition programs, Foodservice systems

## Report features

- Pass/no-pass readiness verdict
- Weighted topic diagnosis
- Pacing analysis
- Full answer review with explanations
- Linked Anki deck repair plan for no-pass or borderline results

## Question source

Original UniPrep2Go bank: 240 unique items. Each attempt draws 120 (Principles 25, Nutrition Care 54, Management 25, Foodservice 16), weighted to the 2022–2026 CDR outline. Expanded 2026-10-16.

## Structure

- Principles of dietetics: 25 questions, target 70%
- Nutrition care for individuals and groups: 54 questions, target 70%
- Management of food and nutrition programs: 25 questions, target 70%
- Foodservice systems: 16 questions, target 70%

## Official source note

CDR Registration Examination for Dietitians (2022–2026 outline): computer-adaptive, 125–145 items (100–120 scored + 25 pretest), 3 hours, scaled pass 25/50. Domains — Principles 21%, Nutrition Care 45%, Management 21%, Foodservice 13%. From January 1, 2027 the 2027–2031 outline regroups these into Fundamentals 23%, Community and Public Health 22%, Human Nutrition and MNT 40%, Food Science and Food Systems 15%; this check still uses the 2022–2026 domains. This UniPrep2Go check is a 120-question / 120-minute diagnostic, not a CDR exam.

## Registration Examination for Dietitians (RD / RDN exam) exam facts

- Exam name: Registration Examination for Dietitians (RD / RDN exam)
- Administered by: Commission on Dietetic Registration (CDR)
- Questions: Computer-adaptive, 125–145 total items (100–120 scored + 25 unscored pretest)
- Scored questions: 100–120 scored (variable length)
- Time: 3 hours
- Scoring: Scaled score 1–50
- Passing score: Scaled score of 25 or greater (verify current handbook at cdrnet.org)
- Delivery: Pearson VUE testing centers / CDR-authorized delivery (verify current options in the RD Handbook)
- Content outline effective: Test specifications January 1, 2022 – December 31, 2026; new 2027–2031 specifications apply from January 1, 2027
- Verify current details at: https://www.cdrnet.org/rd-handbook
Official sources:
- CDR — RD Handbook for Candidates: https://www.cdrnet.org/rd-handbook
- CDR — RD exam test specifications (2022–2026): https://admin.cdrnet.org/vault/2459/web/2022%20RD%20Test%20Specifications%20without%20detail%20CDR%20approved%209%202020%5B1%5D.pdf
- CDR — RD exam test specifications and study outline (2027–2031): https://www.cdrnet.org/vault/2459/web/2027-2031%20RD%20Test%20Specifications%20and%20Expanded%20Study%20Outline.pdf
- CDR — Study resources: https://www.cdrnet.org/study

## Registration Examination for Dietitians (RD / RDN exam) knowledge domains and weights

| # | Knowledge domain | Weight |
| --- | --- | ---: |
| 1 | Principles of Dietetics | 21% |
| 2 | Nutrition Care for Individuals and Groups | 45% |
| 3 | Management of Food and Nutrition Programs and Services | 21% |
| 4 | Foodservice Systems | 13% |
## High-yield Registration Examination for Dietitians (RD / RDN exam) facts (commonly tested)

- The RD exam is computer-adaptive and variable length: minimum 125 items (100 scored + 25 pretest), maximum 145 (120 scored + 25 pretest).
- Passing requires a scaled score of 25 or higher on a 1–50 scale — the number of raw correct answers needed varies by form.
- Current outline (2022–2026): Principles 21%, Nutrition Care 45%, Management 21%, Foodservice 13%.
- From January 1, 2027 the 2027–2031 outline applies: Fundamentals of Dietetics Practice 23%, Community and Public Health Nutrition 22%, Human Nutrition and Medical Nutrition Therapy 40%, Food Science and Food Systems 15%.
- Eligibility requires ACEND-accredited education pathway and supervised practice before CDR authorizes the exam.
- Nutrition Care Process (ADIME) and PES statements are core clinical judgment themes.
- Foodservice and management domains still appear on every exam — do not skip sanitation, procurement, or HR/finance basics.
## Common Registration Examination for Dietitians (RD / RDN exam) candidate questions (Q&A)

### How many questions are on the CDR RD exam?

It is computer-adaptive: you will see 125–145 total questions, including 25 unscored pretest items. You must complete at least 125 items for a scored report.

### What score do you need to pass the RD exam?

A scaled score of 25 or greater on a 1–50 scale. Confirm the current handbook wording at cdrnet.org before you schedule.

### What domains does the RD exam cover?

Four domains under the 2022–2026 specifications: Principles of Dietetics (21%), Nutrition Care for Individuals and Groups (45%), Management of Food and Nutrition Programs and Services (21%), and Foodservice Systems (13%).

### Does the RD exam outline change in 2027?

Yes. From January 1, 2027 CDR uses the 2027–2031 specifications: Fundamentals of Dietetics Practice (23%), Community and Public Health Nutrition (22%), Human Nutrition and Medical Nutrition Therapy (40%), and Food Science and Food Systems (15%). Most topics carry over but are regrouped. UniPrep2Go's free check and deck are still mapped to the 2022–2026 domains, so if you test in 2027, use CDR's new study outline as your checklist.

### Is UniPrep2Go’s RD readiness check the official CDR exam?

No. The 120-question check (free 25-question version, drawn from 240 items) and 240-card Anki deck are independent study aids mapped to CDR domain themes — not official CDR exams or Pearson VUE items.


## FAQ

### What is the RD / RDN exam?

It is CDR’s Registration Examination for Dietitians — the final exam step to earn the RDN credential in the United States after ACEND education and supervised practice.

### How many questions are on the official RD exam?

Computer-adaptive: 125–145 total questions including 25 unscored pretest items. You must answer at least 125 items for a scored report.

### How long is the UniPrep2Go RD readiness check?

120 multiple-choice questions in 120 minutes with a 70% diagnostic target and a score for each of the four CDR domains. It is linear, not computer-adaptive. Official CDR is 125–145 items in 3 hours, scaled pass 25/50.

### Is this UniPrep2Go check the official CDR exam?

No. It is an independent 120-question / 120-minute readiness diagnostic mapped to 2022–2026 CDR domain themes — not CDR or Pearson VUE material, and not the 2027–2031 outline yet.

### Is there a free RD Exam practice test?

Yes — your first UniPrep2Go attempt is free, and it can be this one: a 25-question / 25-minute timed diagnostic drawn by the same topic weights, a 70% readiness target, topic scoring, and a full answer review report. No signup, Exam or Learn mode. The full 120-question / 120-minute mock runs on the $5 UniPrep2Go Mock Pass (5 attempts on any mock).

### How many free attempts do I get on this RD Exam practice test?

One. Your first UniPrep2Go attempt is free: a 25-question timed diagnostic on any exam (Exam or Learn mode, no signup) with the full topic report. Full-length mocks and retakes run on a $5 UniPrep2Go Mock Pass (Gumroad license key): 5 attempts on any mock. Every attempt ends with the full topic report and answer review — the report itself is never paywalled.

### How many questions are on this free RD Exam practice test?

This UniPrep2Go practice test has 120 multiple-choice questions timed against a 120-minute target. The free first attempt is a 25-question / 25-minute diagnostic with the same topic weights; the full session runs on Mock Pass. CDR Registration Examination for Dietitians (2022–2026 outline): computer-adaptive, 125–145 items (100–120 scored + 25 pretest), 3 hours, scaled pass 25/50. Domains — Principles 21%, Nutrition Care 45%, Management 21%, Foodservice 13%. From January 1, 2027 the 2027–2031 outline regroups these into Fundamentals 23%, Community and Public Health 22%, Human Nutrition and MNT 40%, Food Science and Food Systems 15%; this check still uses the 2022–2026 domains. This UniPrep2Go check is a 120-question / 120-minute diagnostic, not a CDR exam.

### Why is the free RD Exam practice test 25 questions?

It is a diagnostic: 25 questions drawn by the same topic weights as the full 120-question mock — enough to rank your weakest topics, short enough to finish in 25 minutes in one sitting. With 1–6 questions per topic it is a quick read, not a verdict; for a full-length timed score, run the 120-question / 120-minute mock.

### What do I get for $5?

The UniPrep2Go Mock Pass: 5 full timed attempts on any UniPrep2Go mock, including the 120-question RD Exam session, in Exam or Learn mode. It is a one-time Gumroad license key that works on any device — no subscription. Every attempt ends with the full topic report and answer review.

### What score do you need on this RD Exam practice test?

The pass target on this practice test is 70%. Your report also breaks down performance by topic so you can see weak areas before the real exam.

### Who should take this RD Exam practice test?

Dietetic interns and RDN candidates after ACEND-accredited education and supervised practice who want a timed domain report before Pearson VUE — not DTR/NDTR and not a nursing or CPT bank.

### Where can I take a RD Exam practice test online?

UniPrep2Go hosts the Free RD Exam Practice Test at https://uniprep2go.study/mock-exams/rd-exam-readiness-check with a timed runner and full readiness report.

### Is this official exam material?

No. This is an independent readiness diagnostic from UniPrep2Go. It is not official exam-board material and does not award certification or guarantee a passing score.

### What does the report show after the mock?

Your report shows a pass/no-pass verdict with explanation, topic diagnosis, pacing notes, full question review with explanations, and a repair plan that links to the paid Anki deck on Gumroad for weak-topic drilling.

### Where do the questions come from?

Original UniPrep2Go bank: 240 unique items. Each attempt draws 120 (Principles 25, Nutrition Care 54, Management 25, Foodservice 16), weighted to the 2022–2026 CDR outline. Expanded 2026-10-16.

## Disclaimer

This is an independent readiness diagnostic from UniPrep2Go. It is not official exam-board material and does not award certification or guarantee a passing score.