ESTIMATION OF ALPHA-AMINO NITROGEN IN PLASMA AND URINE BY THE COLORIMETRIC NINHYDRIN REACTION.
Methods are described for the estimation of plasma and urine alpha-amino nitrogen by the colorimetric ninhydrin reaction; in the method for urine, both ammonia and urea are separated by a rapid ion-exchange resin procedure. Two methods of estimation are given; one has the advantage of great simplicity, but involves the use of cyanide; in the other, cyanide is eliminated. Normal values are reported; they correspond well with those obtained by the gasometric ninhydrin method.
D000596:Amino Acids; D001774:Blood Chemical Analysis; D003124:Colorimetry; D004864:Equipment and Supplies; D006801:Humans; D007202:Indicators and Reagents; D007668:Kidney; D009555:Ninhydrin; D009584:Nitrogen; D010949:Plasma; D012016:Reference Values; D012044:Regression Analysis; D000608:Renal Aminoacidurias; D014556:Urine
D000596:Amino Acids; D007202:Indicators and Reagents; D009555:Ninhydrin; D009584:Nitrogen
AMINO ACIDS; AMINOACIDURIA, RENAL; BLOOD CHEMICAL ANALYSIS; COLORIMETRY; EQUIPMENT AND SUPPLIES; INDICATORS AND REAGENTS; URINE