Abstract: A plastic molding with a plastic carrier (62) comprises several regions (50, 52, 54) separated from one another, at least some of these regions (50, 52, 54) being provided with optionally different films (40, 42). In the production of this non-coherent individual moldings separated from one another by separating spaces (46, 58) and corresponding to the regions (50, 52, 54) are first of all produced. Melt of the plastic carrier (62) is then injected into the separating spaces (46, 58), the individual moldings thereby being joined together. The plastic molding thus constitutes a one-piece whole which can be produced in a single production device (1).

Abstract: A highly sensitive enzyme immunoassay procedure is disclosed for determining IgM-, IgA-, IgG- and IgE- antibodies which are specific to antigens by coating a solid support with an antibody which selectively binds the antibody to be determined in a serum specimen and reacting the selectively bound antibody with an enzyme labeled microbe or antigen and then determining the enzyme activity of the reaction product as a measure of the antibody to be detected. As the antigen can be effectively labeled a relatively impure antigen can be labeled and used in high dilutions resulting in a very sensitive assay; purification by column chromatography is unnecessary. A kit for conducting the assay is also disclosed.