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CDR RD Exam · Registered Dietitian Exam

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1,170 CDR RD Exam practice questions, each with a full explanation. Start free today, upgrade when you are ready.

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1,170
questions: 4
subject areas: Jul 19, 2026
last updated

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1 month30 days of full access$24.99$0.83 a day3 monthsMost popularSave 47%vs $74.97 paying monthly · 90 days$39.99$0.44 a day6 monthsSave 60%vs $149.94 paying monthly · 180 days$59.99$0.33 a day

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Every subject area, covered

I. Principles of Dietetics285 questions
II. Nutrition Care for Individuals and Groups475 questions
III. Management of Food and Nutrition Programs and Services249 questions
IV. Foodservice Systems161 questions

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Results

Date: TodayTime Taken: 00:04:12

Category Quiz

II. Nutrition Care for Individuals and Groups

Answers ResultALL 3CORRECT 1INCORRECT 2SAVED 0

Client data: 62-year-old with CKD stage 4 (eGFR 22 mL/min/1.73 m2), not on dialysis. Recent labs: serum phosphorus 5.9 mg/dL (high), calcium 8.4 mg/dL (low-normal), intact PTH 210 pg/mL (high), potassium 4.6 mEq/L (within normal range). Clinical notes: No edema; blood pressure controlled on medication. Current estimated protein intake is approximately 0.8 g/kg/day. A registered dietitian is reviewing a meal plan for a client with chronic kidney disease (CKD) who is not on dialysis. Based on the information provided, which nutrient should the dietitian prioritize limiting at this time?

Incorrect

A.Phosphorus
B.Potassium
C.Sodium
D.Protein

A hospital’s food service department is experiencing a high level of food waste due to overproduction. As the newly hired Registered Dietitian responsible for improving the department’s efficiency, which strategy would be most effective for reducing food waste?

Correct

A.Implement a production forecast using historical meal counts and tray-return data, and adjust daily meal production accordingly.
B.Increase portion sizes for all meals to reduce the likelihood of patient complaints.
C.Prepare smaller batches more frequently throughout the day, but do not change the method used to estimate how many meals to produce.
D.Switch to a room-service style meal ordering system without tracking ordering trends or updating production targets.

Category QuizI. Principles of Dietetics1 of 3 correct04:12

Answers ResultALL 3CORRECT 1INCORRECT 2SAVED 0

Incorrect

A.Phosphorus
B.Potassium
C.Sodium
D.Protein

Hide Explanation

Phosphorus should be prioritized because the client has hyperphosphatemia along with an elevated PTH, consistent with CKD-mineral and bone disorder risk. Limiting dietary phosphorus helps reduce phosphorus burden and can help mitigate secondary hyperparathyroidism and related bone and cardiovascular complications. The choice mentioning potassium is less appropriate because the client’s potassium is within the normal range. The choice mentioning sodium is not the top priority in this specific scenario because blood pressure is controlled and there is no edema provided to suggest sodium/fluid-related volume issues driving the current plan. The choice mentioning protein is not the best answer here because the client’s current intake is already around 0.8 g/kg/day, which is commonly within the recommended range for many non-dialysis CKD prescriptions; the immediate lab-driven concern is elevated phosphorus.

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CDR RD Exam questions test how you apply knowledge in real situations. After every answer, you are provided with a clear rationale so you can understand the reasoning, learn from mistakes, and recognize it when it appears again.

Question 1 of 3

A registered dietitian is reviewing a meal plan for a client with chronic kidney disease (CKD) who is not on dialysis. Based on the information provided, which nutrient should the dietitian prioritize limiting at this time?

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