500

Study Questions

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5 Star Reviews

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How Our Practice Test Works?

Study wherever, whenever with these quiz types:

Pick a Mode

Pick a Mode

You can choose Exam Mode (timed 90-minute simulation) or Study Mode for preparation.

Realistic Mix

Realistic Mix

Questions reflect both multiple-choice and scenario/performance-style prompts aligned to RD objectives.

Detailed Explanations

Detailed Explanations

Every question includes a clear explanation, so you know why an answer is correct.

Domain Analytics

Domain Analytics

See strengths/weaknesses by the domains & sub-topics to focus your revision.

Reattempts

Reattempts

Retake sets to improve your speed and accuracy; watch your score trend toward the benchmark.

Exam Simulator

Exam Simulator

Get a feel for the real exam with our Commission on Dietetic Registration (CDR) practice test.

Why Choose PrepHOW for RD Practice Questions

Train the way you'll be tested. Our platform replicates the real Commission on Dietetic Registration (CDR) experience and turns every attempt into clear, actionable progress-so you waste less time and pass sooner.

Real Exam Feel

Exam/Study modes, question flagging, and instant or end-of-exam feedback.

Smarter Analytics, Faster Improvement

Trend charts so you can see when you're consistently above the passing scrore.

Quality You Can Trust

Clear, teach-back explanations with why the correct answer is right and why others aren't.

Trusted By 1.2K+ Peoples

Discover how our practice tests have empowered countless students to pass their exams with ease.

Meghan Chambers

Meghan Chambers

Just passed my RD exam on the first try thanks to PrepHow! The practice questions covering clinical nutrition and biochemistry were spot-on. I was worried about the food safety and sanitation questions, but PrepHow prepared me well. Worth every penny for anyone serious about becoming an RD.

Orion Daniel

Orion Daniel

Best investment for my RD exam prep! The practice tests covered everything from pharmacology-nutrition interactions to lifecycle nutrition. I appreciated how the questions mimicked the actual exam format and difficulty level. Passed on my first attempt and already recommending PrepHow to classmates!