Study of an enzyme immunoassay kit for carcinoembryonic antigen.

We evaluated a commercial enzyme immunoassay kit for carcinoembryonic antigen (CEA) based on a non-competitive "sandwich principle" method (Abbott Laboratories). The serum sample is treated with an acid buffer and the supernate is incubated with an anti-CEA coated polystyrene bead. After washing, the bead is incubated with an anti-CEA/peroxidase conjugate.

[Study of a kit for the search for HBs antigen by an enzymo-immunological method (author's transl)].

The authors present a kit marketed by Abbott for searching HBs antigen by an immunological method. This technic of sandwich type included 3 stages. During a first stage, the HBs antigen eventually present was extracted from the biological fluid by a specific antibody adsorbed on a polystyrène bead.