Patent ID: 7807107

Claim:
A particle agglutination-evaluating container for use in immunological analysis, based on an agglutinate formed in an agglutination reaction between an antibody- or antigen-containing sample and agglutination particles, comprising: a transparent container main body having a raised bottom including a sloping bottom face and a raised bottom face extended in a horizontal direction at the top of the sloping bottom face to form an obtuse angle with the sloping bottom face; and a funnel-shaped sample inlet attached on an internal wall of transparent container main body; and a fluidal separation layer containing insoluble particles which are filled in the transparent container main body and where the agglutination particles are separated according to the degree of agglutination, wherein the agglutination particles form an agglutinate and are located on a top face of the fluidal separation layer when the agglutination reaction is positive, the agglutination particles do not form an agglutinate and migrate to the bottom of the sloping bottom face when the agglutination reaction is negative, and the agglutination particles form an agglutinate and are located in an intermediate region of the fluidal separation layer when the agglutination reaction is weakly positive between positive and negative, and thus agglutination is evaluated by observation from the bottom face side of the transparent container main body, where the agglutination reaction is judged positive when the agglutination particles are observed through the raised bottom face, negative when the agglutination particles are observed at the bottom end of the sloping bottom face, and weakly positive when the agglutination particles are observed in the middle of the sloping bottom face.