Comparative standards are reference values from reputable and authoritative sources such as government agencies, independent scientific panels, standards organizations, and scientific and professional organizations. These include population-based growth charts, nutrient intake recommendations and laboratory norms, as well as disorder-specific guidelines.

For comparison of nutrient intake to established standards of the Dietary Reference Intakes (DRI) see: Dietary Reference Intakes | The National Academies Press

See also: ( TABLE #1, Total Protein and Energy Recommendations for Individuals with Urea Cycle Disorders When Well)