NDTR Certification Exam 2026/2027 | Complete Practice Test, Answers & Detailed Rationales

NDTR Certification Exam 2026/2027 | Complete Practice
Test, Answers & Detailed Rationales
Question 1
Which organization administers the Nutrition and Dietetics Technician,
Registered (NDTR) credential?
A. American Medical Association
B. Commission on Dietetic Registration
C. National Institutes of Health
D. Food and Drug Administration
Correct Answer: B. Commission on Dietetic Registration
Rationale: The Commission on Dietetic Registration (CDR) is the
credentialing agency for nutrition and dietetics practitioners, including
NDTRs.

Question 2
Which nutrient provides the greatest amount of energy per gram?
A. Carbohydrate
B. Protein
C. Fat
D. Water
Correct Answer: C. Fat
Rationale: Fat provides approximately 9 kcal per gram, compared with
approximately 4 kcal per gram for carbohydrate and protein.

Question 3
Which vitamin is primarily involved in calcium absorption and bone
metabolism?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K

,Correct Answer: C. Vitamin D
Rationale: Vitamin D promotes intestinal calcium and phosphorus
absorption and supports normal bone mineralization.

Question 4
Which mineral is a major component of hemoglobin?
A. Calcium
B. Iron
C. Sodium
D. Potassium
Correct Answer: B. Iron
Rationale: Iron is an essential component of hemoglobin, the protein
responsible for transporting oxygen in red blood cells.

Question 5
A food providing 20 grams of carbohydrate, 5 grams of protein, and 2
grams of fat contains approximately how many kilocalories?
A. 78 kcal
B. 98 kcal
C. 118 kcal
D. 138 kcal
Correct Answer: B. 118 kcal
Rationale: Carbohydrate provides 4 kcal/g (80 kcal), protein provides 4
kcal/g (20 kcal), and fat provides 9 kcal/g (18 kcal). The total is 118
kcal.

Question 6
Which nutrient is most directly associated with maintaining fluid
balance and nerve transmission?
A. Sodium
B. Iron

,C. Vitamin C
D. Folate
Correct Answer: A. Sodium
Rationale: Sodium is a major extracellular electrolyte that helps
regulate fluid balance and contributes to nerve transmission and
muscle function.

Question 7
Which food is considered a complete protein source?
A. White rice
B. Apples
C. Eggs
D. Olive oil
Correct Answer: C. Eggs
Rationale: Eggs contain all nine essential amino acids in sufficient
proportions and are therefore considered a complete protein.

Question 8
Which condition is characterized by persistently elevated blood
glucose levels?
A. Hypoglycemia
B. Hyperglycemia
C. Hypotension
D. Hypercalcemia
Correct Answer: B. Hyperglycemia
Rationale: Hyperglycemia refers to blood glucose levels that are
higher than the normal range and is commonly associated with
diabetes.

Question 9
Which macronutrient is primarily responsible for building and
repairing body tissues?

, A. Protein
B. Fat
C. Water
D. Carbohydrate
Correct Answer: A. Protein
Rationale: Protein provides amino acids needed for tissue growth,
maintenance, repair, enzymes, hormones, and other physiological
functions.

Question 10
Which vitamin deficiency is associated with megaloblastic anemia and
neural complications?
A. Vitamin B12
B. Vitamin E
C. Vitamin K
D. Vitamin D
Correct Answer: A. Vitamin B12
Rationale: Vitamin B12 deficiency can cause megaloblastic anemia
and neurological abnormalities if untreated.

Question 11
Which food is naturally high in dietary fiber?
A. Butter
B. Chicken breast
C. Lentils
D. Eggs
Correct Answer: C. Lentils
Rationale: Lentils are legumes and provide substantial amounts of
dietary fiber, including soluble and insoluble fiber.

Question 12
What is the primary function of carbohydrates in the diet?