| 摘要 |
A reagent for immunity examination which contains insoluble carrier particle s, can be stored over long, and gives highly accurate and reliable found values ; a method of immunity examination with the reagent; and a method of stabilizi ng the reagent. The method of immunity examination comprises conducting an antigen-antibody reaction with the aid of insoluble carrier particles in an aqueous medium containing both a buffer having the ability to buffer in a neutral to alkaline region (provided that the buffer is not a carbonate-base d one) and a carbonic acid compound releasing a hydrogen carbonate ion. The reagent for immunity examination comprises a buffer having the ability to buffer in a neutral to alkaline region (provided that the buffer is not a carbonate-based one), a carbonic acid compound releasing a hydrogen carbonat e ion, and insoluble carrier particles. The method of stabilizing the reagent for immunity examination containing insoluble carrier particles comprises incorporating the insoluble carrier particles into an aqueous medium containing both a buffer having the ability to buffer in a neutral to alkali ne region (provided that the buffer is not a carbonate-based one) and a carboni c acid compound releasing a hydrogen carbonate ion.
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