Changes in Ammonia Values of Protein-free Filtrates of Blood During Storage in the Frozen State

[摘要] Protein-free filtrates of blood treated with trichloracetic acid were divided into two or three parts. The ammonia concentration of one of these was determined immediately by the ninhydrin method described by Nathan and Rodkey (1). The others were kept frozen for periods of 1-8 days and then thawed and analyzed. The blood ammonia concentrations calculated from these filtrate values were compared. A significant change in ammonia level during frozen storage was demonstrated.

[学科分类] 过敏症与临床免疫学