ROSENBLUM, R A correction for the interference of urea in the determination of total alpha amino acid nitrogen in plasma by the ninhydrin photometric method. [electronic resource] - The Journal of laboratory and clinical medicine Jul 1959 - 132-5 p. digital Publication Type: Journal Article ISSN: 0022-2143 Subjects--Topical Terms: Amino Acids--bloodHumansNinhydrinNitrogenPhotometryPlasmaUrea