EatrightPREP Registered Dietitian (RD) Practice Exam

DRIs rely on four primary reference values to assess nutrient intakes: Recommended Dietary Allowance (RDA), Adequate Intake (AI), Tolerable Upper Intake Level (UL), and Estimated Average Requirement (EAR). The EAR represents the daily intake estimated to meet the needs of 50% of healthy individuals in a group; the RDA is set higher to cover nearly all individuals (about 97–98%). When there isn’t enough evidence to establish an RDA, an AI serves as the best available guideline. The UL marks the maximum daily intake unlikely to cause adverse effects, helping to prevent excessive consumption. Together, these values form the framework for evaluating and planning nutrient intake for individuals and populations, separate from labeling values. Percent Daily Value and Daily Value are labeling references used on nutrition facts panels to help consumers gauge how a serving contributes to daily goals, not part of the DRI framework. Estimated Energy Requirement is the estimated daily calories needed to maintain energy balance, focusing on energy needs rather than nutrient adequacy. Therefore, the set that includes RDA, AI, UL, and EAR best represents the main components used in DRIs.