Freezing as a Method of Preserving Blood Ammonia

[摘要] The influence of temperature on in-vitro generation of ammonia in whole blood was evaluated. It was found that when blood was placed in a freezer at -20 to -25° there was no significant rise of blood ammonia levels even after 8 days of storage. There was a gradual rise when blood was placed in a refrigerator with the temperature at about 4° and a more rapid rise at room temperature. The inhibition of ammonia production at a temperature below -20° facilitates the laboratory procedure when it is necessarily delayed.

[学科分类] 过敏症与临床免疫学