METHOD OF IMMUNITY EXAMINATION WITH INSOLUBLE CARRIER PARTICLE AND REAGENT THEREFOR

摘要

A reagent for immunity examination which contains insoluble carrier particles, 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 stabilizing 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-based 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 carbonate 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 alkaline region (provided that the buffer is not a carbonate-based one) and a carbonic acid compound releasing a hydrogen carbonate ion.