IMMUNOASSAY USING MICROTITER PLATE

摘要

PROBLEM TO BE SOLVED: To provide immunoassay capable of more effectively performing magnetic separation of magnetic particles and permitting high sensitivity measurement by simple operation. SOLUTION: Immunoassay for measuring an antigen or antibody in a specimen qualitatively or quantitatively has a stage for reacting an antibody or antigen supported on magnetic particles with an antiboy or antigen in a specimen specifically bonded to the supported antigen or antibody in a liquid medium within the well 5 of a microtiter plate 2, a stage for arranging a magnet 4 on the lateral side of the well 5 to apply a magnetic field to the well 5 to magnetically separate and gather the magnetic particles in the liquid medium to hold them on the inner wall side surface of the well 5 and a stage measuring the optical characteristics of the supernatant soln. generated in the well 5 by holding the magnetic particles on the inner wall side surface of the well 5.