title: Urinary nitrogen excretion as related to dietary protein in pregnant women.
abstract: The amount of urea in the urine acutely decreases when dietary protein is restricted. This change in urinary urea nitrogen can be represented satisfactorily by the urea nitrogen/total nitrogen (UN/TN) ratio or the UN/creatinine nitrogen (UN/CN) ratio. These determinations are apparently effective tools for simply and objectively describing the recent protein intake of pregnant women.
mesh_terms: D000641:Ammonia / Q000652:urine; D003404:Creatinine / Q000652:urine; D004044:Dietary Proteins / Q000378:metabolism*; D005260:Female; D006801:Humans; D009584:Nitrogen / Q000652:urine*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D014508:Urea / Q000652:urine*
chemical_list: D004044:Dietary Proteins; D000641:Ammonia; D014508:Urea; D003404:Creatinine; D009584:Nitrogen