Certified Nutrition Specialist Practice Test 2026-2027 and Free Sample Questions

A patient with a long history of alcohol use disorder presents with confusion, ophthalmoplegia, and ataxia. Which vitamin deficiency is most likely responsible?

In a patient with stage 4 chronic kidney disease not yet on dialysis, which dietary modification is most appropriate to slow disease progression?

Which laboratory marker best reflects acute changes in protein status over the past few days because of its short half-life?

Which component typically accounts for the largest portion of total daily energy expenditure in a sedentary adult?

Which lipoprotein is primarily responsible for reverse cholesterol transport from peripheral tissues back to the liver?

Which dietary factor most enhances the absorption of nonheme iron when consumed in the same meal?

Which laboratory value is the standard measure of average blood glucose control over the preceding two to three months?

Which amino acid is typically the first limiting amino acid in cereal grains such as wheat and rice?

A hospitalized patient with a functioning gastrointestinal tract is unable to meet needs orally after major head and neck surgery. Which form of nutrition support is most appropriate first?

Which trace mineral is an essential component of the antioxidant enzyme glutathione peroxidase?

Which condition is the most likely cause of hyponatremia in a marathon runner who consumed large volumes of plain water during the race?

Which enzyme secreted by the pancreas is primarily responsible for the digestion of dietary triglycerides in the small intestine?

A newborn diagnosed with phenylketonuria requires a diet that strictly limits which amino acid?

According to standard infant feeding guidance, complementary foods should generally be introduced at approximately what age?

Which dietary pattern has the strongest evidence base for reducing cardiovascular disease risk?

Which organ converts 25-hydroxyvitamin D to the biologically active form 1,25-dihydroxyvitamin D?

Bilateral temporal muscle wasting and loss of subcutaneous fat in the orbital region are physical findings most consistent with which condition?

Which property best describes a food with a low glycemic index?

A patient taking warfarin should be counseled to maintain consistent intake of foods high in which nutrient?