Insoluble carrier particle nephelometric immunoassay reagent

Abstract

The present invention provides: a reagent and a kit for an insoluble carrier particle nephelometric immunoassay which stabilize the agglutination reaction by suppressing the action of blood plasma components that are involved in the agglutination reaction of insoluble carrier particles such as latex and affect the values to be determined, to provide the stable absorbances of the reaction solutions and the accurate determination results; and a method of an insoluble carrier particle nephelometric immunoassay utilizing said reagent or kit. An antigen or an antibody is carried on an insoluble carrier particle in the presence or absence of a buffer solution comprising a compound having within its molecule a group shown below such as bicine, tricine, then an antibody- or antigen-sensitized insoluble carrier particle suspension is allowed to contact a sample in the presence of the above mentioned buffer solution to cause the immune agglutination reaction, and the turbidity generated by the insoluble carrier particle agglutination reaction is measured to determine the antigen or antibody in the sample. 1 wherein R1, R2 and R3 may be the same or different, and independently represent a hydrogen atom, a hydroxyalkyl group or the like.

Dependencies are inferred from the claim text.