Simple method for monitoring 24-hour urinary urea nitrogen excretion.
The urine urea nitrogen/urine creatinine excretion ratio (UUN/UCr) of a "spot" urine specimen obtained approximately 5 hours after the last meal of the day can be used to accurately calculate the urinary urea excretion for the previous 24-hour period. Because UUN excretion is largely determined by dietary intake of protein nitrogen, this method can be used to estimate dietary protein intake for the previous 24-hour period. Strategies for using this simple method for inexpensively and continuously monitoring dietary protein intake are discussed.
D003404:Creatinine / Q000652:urine; D004044:Dietary Proteins / Q000008:administration & dosage; D006801:Humans; D008433:Mathematics; D008722:Methods; D009584:Nitrogen / Q000652:urine*; D013997:Time Factors; D014508:Urea / Q000652:urine*
D004044:Dietary Proteins; D014508:Urea; D003404:Creatinine; D009584:Nitrogen