Urine nitrogen as a biomarker for the validation of dietary protein intake.

TitleUrine nitrogen as a biomarker for the validation of dietary protein intake.
Publication TypeJournal Article
Year of Publication2003
AuthorsBingham, SA
JournalJ Nutr
Volume133 Suppl 3
Issue3
Pagination921S-924S
Date Published2003 03
ISSN0022-3166
KeywordsBiomarkers, Diet Records, Dietary Proteins, False Negative Reactions, Humans, Nitrogen, Nutrition Assessment, Time Factors
Abstract

When validated for completeness, 24-h urine nitrogen obtained from repeated 24-h urine collections has provided useful insights into the validity of dietary assessments, underreporting behaviors and the structure of measurement errors that are associated with different methods. This is particularly so when nitrogen is combined with another marker in 24-h urine samples, potassium. Although the collection of 24-h urine is a tedious procedure, the method is readily accessible and comparatively inexpensive. Other markers of dietary intake and intermediate risk markers may also be measured in the 24-h urine that is obtained.

DOI10.1093/jn/133.3.921S
Alternate JournalJ. Nutr.
Citation Key10.1093/jn/133.3.921S
PubMed ID12612177